/* front text  */
@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,400;0,500;1,600&display=swap");

/* set deflaut  */

:root {
  --header-height: 3rem;

  /* color mod  */
  --hue-color: 250;
  --fist-color: hsl(var(--hue-color), 69%, 61%);
  --fist-color-second: hsl(var(--hue-color), 69%, 61%);
  --fist-color-alt: hsl(var(--hue-color), 57%, 53%);
  --fist-color-lighter: hsl(var(--hue-color), 98%, 85%);
  --title-color: hsl(var(--hue-color), 60%, 15%);
  --text-color: hsl(var(--hue-color), 69%, 20%);
  --text-color-light: hsl(var(--hue-color), 8%, 65%);
  --input-color: hsl(var(--hue-color), 70%, 96%);
  --body-color: hsl(var(--hue-color), 60%, 97%);
  --backgroud-modal: hsl(var(--hue-color), 50%, 95%);

  --container-color: #fff;

  /* font and typograpy  */
  --body-font: "Poppins", sans-serif;

  /* text font size  */
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.831rem;
  --smaller-font-size: 0.75rem;

  /* font whight  */
  --font-medium: 500;
  --font-semi-bold: 600;

  /* margenes bottom  */
  /* .25rem = 4px, .5rem = 8pc, .75rem = 12px ...  */
  --mb-0-25: 0.25rem;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;
  --mb-3: 3rem;

  /* z index  */
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

/* font size for large divices  */
@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.813rem;
  }
}
/* ================ DARK THEME =================  */
body.dark-theme{
  transition: .7s;
  --fist-color-second: hsl(var(--hue-color), 30%, 8%);
 
 
  --title-color: hsl(var(--hue-color), 20%, 90%);
  --text-color: hsl(var(--hue-color), 8%, 75%);
 
  --input-color: hsl(var(--hue-color), 29%, 16%);
  --body-color: hsl(var(--hue-color), 28%, 12%);
  --backgroud-modal: hsl(var(--hue-color),10%, 20%);
  --container-color: hsl(var(--hue-color), 29%, 16%);
}
/* =================== button dark night ============= */
.nav_btns{
  display: flex;
  align-items: center;
}

.change-theme{
  z-index: var(--z-modal);
  font-size: 1.5rem;
  color: var(--fist-color);
  margin: auto;
  cursor: pointer;
}

.change-theme:hover{
  color: var(--fist-color-alt);
  transform: translateY(-0.2rem);
}

/* base  */
*,
::before,
::after {
  box-sizing: border-box;
}
/* scroll-behavior: smooth; lam muot khi chuyen trang  */
html {
  /* scroll-behavior: smooth; lam muot khi chuyen trang  */
  scroll-behavior: smooth;
}

body {
  /* top right bottom lfet  */
  margin: var(--header-height) 0 0 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: .7s;
}

/* set chieu cao va do rong cua chu  */
h1,
h2,
h3,
h4 {
  color: var(--title-color);
  /* cỡ chữ bán đậm  */
  font-weight: var(--font-semi-bold);
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* -----------------TÁI SỬA DỤNG CSS---------------------  */
.selection {
  padding: 2rem 0 2rem;
}

.section_title {
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-0-25);
}

.section_subtitle {
  display: block;
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-3);
}

.section_title,
.section_subtitle {
  text-align: center;
}

/* ------------------ LAYOUT -----------------------------  */
.container {
  max-width: 768px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}

.grid {
  display: grid;
  /* Khoảng trong giữa hàng và côt grid  */
  gap: 1.5rem;
}

.header {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--body-color);
  box-shadow: 0 -1px 4px rgb(29, 29, 29);
  border-radius: 1.5rem 1.5rem 0 0;
}

.nav {
  max-width: 968px;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  /* background-color: steelblue; */
}

.nav_logo,
.nav_toggle {
  color: var(--title-color);
  font-weight: var(--font-medium);
  z-index: var(--z-fixed);
}

.zalo_img{
  width: 15rem;
  border-radius: .5rem;
}

.nav_logo:hover {
  color: var(--fist-color);
}
.info_modal-title{
  color: rgb(48, 47, 47);
}

/* set nav cho man hinh nho  */
@media screen and (max-width: 768px) {
  .nav_menu {
    /* box-sizing: border-box; */
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--body-color);
    padding: 1.5rem 1.5rem 2rem;
    box-shadow: 0 -1px 4px rgb(29, 29, 29);
    border-radius: 1.5rem 1.5rem 0 0;
    transition: 0.3s;
    color: var(--fist-color);


  }

  .change-theme{
    padding-top: .5rem;
    margin-right: 3rem;
  }
}

.nav_list {
  /* set lưới 3 ô 1 hàng  */
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;

}

.nav_link {
  display: flex;

  /* flex cac listItem theo cột  */
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
}

.nav_link:hover {
  color: var(--fist-color);
}

.nav_icon {
  font-size: 1.2rem;
}

.nav_close {
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--fist-color);
  transition: 1s;
}

.nav_close:hover {
  color: var(--fist-color-alt);
}

.nav_toggle {
  position: absolute;
  right: 1.3rem;
  bottom: 0.3rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--fist-color);
  transition: 0.5s;
}

.nav_toggle:hover {
  color: var(--fist-color-alt);
}

/* show menu  */
.show-menu {
  bottom: 0 !important;
}

.hiden-icon-toggle {
  bottom: -100% !important;
}

.home_img img {
  background-image: linear-gradient(rgb(215, 143, 233), rgb(36, 56, 94));
  height: 200px;
  border-radius: 55% 45% 52% 48% / 50% 17% 83% 50%;
  box-shadow: 0.2rem 0.2rem 0.5rem rgba(83, 83, 83, 0.411);
}

/* ============================= HOME =====================  */
.home_container {
  gap: 1rem;
}

.home_content {
  /* chia ra 2 cột .5 và 3 */
  grid-template-columns: 0.5fr 3fr;
  padding-top: 3.5rem;
  align-items: center;
}

.home_social {
  display: grid;
  grid-template-columns: max-content;
  row-gap: 1rem;
}

.home_social-icon {
  height: 2rem;
  color: var(--fist-color);
  transition: 0.3s;
}

.home_social-icon-git {
  font-size: 2rem;
  height: 2rem;
  color: var(--title-color);
  transition: 0.3s;
}

.home_social-icon:hover {
  color: var(--fist-color-alt);
  font-size: 1.4rem;
  transform: translateY(-0.1rem);
}

.home_data {
  /* background-color: var(--fist-color-alt); */
  grid-column: 1/3;
}
.home_title {
  font-size: var(--big-font-size);
}

.home_subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-0-75);
}

.home_description {
  margin-bottom: var(--mb-2);
}

.home_scroll {
  transition: 0.3s;
}
.home_scroll:hover {
  transform: translateY(0.5rem);
}

.home_scroll-button {
  transition: 0.3s;
  /* background-color: rgb(153, 201, 238); */
}

.home_scroll-button:hover {
  color: var(--fist-color-alt);
}

.home_scroll-mouse {
  font-size: var(--normal-font-size);
}

.home_scroll-name {
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  margin-right: var(--mb-0-25);
}

.home_scroll-arrow {
  font-size: 1.25rem;
}

/* =============================== BUTTONS ===========================  */
.button {
  display: inline-block;
  background-image: linear-gradient(rgb(236, 206, 255), var(--fist-color));
  color: rgb(241, 241, 241);
  padding: 1rem;
  border-radius: 23% 77% 30% 70% / 48% 35% 65% 52%;
  font-weight: var(--font-medium);
  transition: 0.3s;
  box-shadow: 0.2rem 0.2rem 0.5rem rgba(83, 83, 83, 0.411);
  cursor: pointer;
}

.button:hover {
  background-image: linear-gradient(rgb(206, 160, 235), var(--fist-color));
  color: rgb(254, 254, 255);
}

.button--small {
  padding: 0.75rem 1rem;
}

.button--link {
  padding: 0;
  background: none;
  color: var(--fist-color-alt);
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.button--link:hover {
  color: rgb(115, 4, 206);
  font-weight: var(--font-semi-bold);
}
.button:hover {
  transform: translateY(-0.2rem);
}

.button_icon {
  font-size: 1.25rem;
  margin-left: var(--mb-0-5);
  transition: 0.3s;
}

.button-flex {
  display: inline-block;
  align-items: center;
}

.about_img {
  width: 300px;
  border-radius: 0.5rem;

  /* căn hình ở giữa  */
  justify-self: center;
  align-self: center;
}

.about_description {
  text-align: center;
  margin-bottom: var(--mb-2-5);
}

.about_info {
  display: flex;
  /* căn đều giữa cac title  */
  justify-content: space-evenly;

  margin-bottom: var(--mb-2-5);
}

.about_info-title {
  font-size: var(--h2-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--text-color);
}
.about_info-name {
  font-size: var(--smaller-font-size);
}

.about_info-title,
.about_info-name {
  /* khóa display   */
  display: block;

  text-align: center;
}

.about_button {
  display: flex;
  justify-content: center;
  border-radius: 55% 45% 30% 70% / 43% 50% 50% 57%;
}

/* ============================ SKILLS =======================  */
.skills_container {
  row-gap: 0;
}
.skills_header {
  display: flex;
  align-items: center;
  margin-bottom: var(--mb-2-5);
  cursor: pointer;
}

.skills_icon,
.skills_arrow {
  font-size: 2rem;
  color: var(--fist-color);
}

.skills_icon {
  margin-right: var(--mb-0-75);
}

.skills_title {
  font-size: var(--h3-font-size);
}

.skills_subtitle {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

.skills_arrow {
  margin-left: auto;
  transition: 0.4s;
}

.skills_titles {
  display: flex;

  /* dàn đều items  */
  justify-content: space-between;
  margin-bottom: var(--mb-0-5);
}

.skills_name {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
}

.skills_bar,
.skills_percentage {
  height: 5px;
  border-radius: 0.25rem;
}

.skills_bar {
  background-color: var(--fist-color-lighter);
}

.skills_percentage {
  display: block;
  background-color: var(--fist-color);
}
/* ------------- BAR SKILL -------------------------------  */
.skills_html {
  width: 90%;
}

.skills_css {
  width: 90%;
}

.skills_js {
  width: 90%;
}

.skills_ang {
  width: 90%;
}

.skills_php {
  width: 90%;
}

.skills_node {
  width: 90%;
}

.skills_sql {
  width: 90%;
}

.skills_py {
  width: 90%;
}

.skills_figma {
  width: 90%;
}

.skills_sketch {
  width: 90%;
}

.skills_pts {
  width: 90%;
}

.skills_list{
  transition: .5s;
}

.skills_close .skills_list {
  height: 0;

  /* Khi chiều cao của box không đủ chứa text, thì text bị tràn sẽ được dấu đi. */
  overflow: hidden;
}

.skills_open, .skills_close{

  transition: .3s;
}

.skills_open .skills_list {
  transition: .5s;
  height: max-content;
  margin-bottom: var(--mb-2-5);
}

.skills_open .skills_arrow {
  transition: 0.3s;
  transform: rotate(-180deg);
}

/* ================================= QUALIFICATION =======================  */
.qualification_tabs {
  display: flex;

  /* dàn dều giữa */
  justify-content: space-evenly;
  margin-bottom: var(--mb-2);
}

.qualification_button {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  cursor: pointer;
}

.qualification_button:hover {
  color: var(--fist-color-alt);
}

.qualification_icon {
  font-size: 1.8rem;
  margin-right: var(--mb-0-25);
}

.qualification_data {
  display: grid;

  /* min-content : lấy độ dài chữ dài nhất 
    max-content : dài ra hết mức có thẻ
    fit-content : fit dộ dài vừa màn hình r xuống hàng
  */
  grid-template-columns: 1fr max-content 1fr;
  column-gap: 1.5rem;
}

.qualification_title {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
}

.qualification_subtitle {
  /*  display: inline-block: chuyển các phân từ lên 1 dòng nhưng vấn giữ cac thuộc tính của block  */
  display: inline-block;
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-1);
}

.qualification_calendar {
  font-size: var(--smaller-font-size);
  color: var(--text-color-light);
}

.qualification_rounder {
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: var(--fist-color);
  border-radius: 50%;
  transform: translateY(15px);
}

.qualification_line {
  display: block;
  width: 1px;
  height: 100%;
  background-color: var(--fist-color);
  transform: translate(4.5px, 8px);
}

.qualification [data-content] {
  display: none;
}

.qualification_active[data-content] {
  display: block;
}

.qualification_button.qualification_active {
  color: var(--fist-color);
}

/* ================================ SERVICES ====================  */
.services_container {
  gap: 1.5rem;

  /* - lặp 2 lần 1fr 
     - tạo ra 2 cột*/
  grid-template-columns: repeat(2, 1fr);
}

.services_content {
  /* Relative: Định vị trí tuyệt đối cho các thành phần, 
  không gây ảnh hưởng tới vị trí ban đầu hay các thành phần khác. */
  position: relative;
  background-color: rgba(149, 157, 172, 0.233);
  padding: 3.5rem 0.5rem 1.25rem 1.5rem;
  border-radius: 0.25rem;
  box-shadow: 0 2px 4px;
}

.services_content:hover {
  box-shadow: 0 4px 8px;
}

.services.icon {
  display: block;
  font-size: 1.5rem;
  color: var(--fist-color);
  margin-bottom: var(--mb-1);
}

.services_title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-1);
}

.services_button {
  cursor: pointer;
  font-size: var(--small-font-size);
}

.services_button:hover .button_icon {
  transform: translateX(0.25rem);
}

.services_modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
  z-index: var(--z-modal);
  transition: 0.3s;
  /* opacity: làm mờ  */
  opacity: 0;
  /* :visibility: Thành phần sẽ không được nhìn thấy.  */
  visibility: hidden;
}

.services_modal-content {
  position: relative;
  background-color: var(--backgroud-modal);
  padding: 1.5rem;
  border-radius: 0.5rem;
}

.services_modal-services {
  row-gap: 1rem;
}

.services_modal-service {
  display: flex;
}

.services_modal-icon {
  padding-top: 1.25rem;
  padding: 1.25rem 1rem 0 0;
}

.services_modal-title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-1-5);
}

.services_modal-close {
  position: absolute;
  top: 2.7rem;
  right: 1.5rem;
  color: var(--fist-color);
  cursor: pointer;
  font-size: 2rem;
}

.modal-active {
  opacity: 1;
  visibility: visible;
}
/* ======================= PROTFOLIO ====================== */
.portfolio_container {
  /* sửa dung giá trị mặc định  */
  overflow: initial;
}

.protfolio_content {
  padding: 0 1.5rem;
}

.portfolio_img {
  width: 265px;
  border-radius: 0.5rem;
  /* justify-self - Căn chỉnh nội dung bên trong một mục lưới dọc theo trục hàng */
  justify-self: center;
}

.portfolio_title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--mb-0-5);
}

.portfolio_data {
  /* text-align: justify; */
  /* background-color: rosybrown; */
  margin: 0 2.5rem 2rem;
  /* margin-left: 1rem;
  margin-bottom: 2rem; */
}
.portfolio_description {
  margin-bottom: var(--mb-0-75);
}

.portfolio_button .button_icon {
  border-radius: 21% 79% 87% 13% / 49% 46% 54% 51%;
  padding-right: 0.5rem;
}
.portfolio_button:hover .button_icon {
  transform: translateX(0.25rem);
}

.swiper-button-next::after,
.swiper-button-prev::after {
  content: "" !important;
}

.swiper-button-next,.swiper-button-prev
{
  font-size: 2rem;
  top: 45% !important;
}

/* ============================== CONTACT ME ===================  */
.contact_container{
  row-gap: 3rem;
}

.contact_infomation{
  display: flex;
  margin-bottom: var(--mb-2);
}

.contact_icon{
  transform: translateY(1rem);
  font-size: 2rem;
  color: var(--fist-color);
  margin-right: var(--mb-0-75);
}

.contact_title{
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
}

.contact_subtitle{
  font-size: var(--font-medium);
}

.contact_content{
  background-color: var(--input-color);
  border-radius: .5rem;
  padding: .75rem 1rem .25rem;
}

.contact_input{
  width: 100%;
  background-color: var(--input-color);
  color: var(--text-color);
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  border: none;
  /* border-radius: 0.2rem;
  border-left: 2px solid transparent;
  border-top:  solid transparent;
  box-shadow: 3px 8px 9px 0px rgb(29 29 29 / 30%); */
  

}

.contact_input::placeholder{
  opacity: 0.4;
}

.contact_lable{
  text-decoration-line: underline;
}

.contact_button{
  border-radius: .5rem;
}
/* ========================= MAPS ===============  */
#map-address{
  display: flex;
  justify-content: space-evenly;
}
.gmap_canvas{
  border: 2px solid black;
}
/* ========================= FOOTER ===============  */
.footer{
  padding-top: 2rem;
}

.footer_container{
  row-gap: 0rem;

}

.footer_bg{
  background-image: linear-gradient(hsla(250, 45%, 47%, 0.616), hsla(250, 75%, 65%, 0.973));
  padding: 0rem 0 3rem;
}

.footer_title{
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-0-25);
}

.footer_subtitle{
  font-size: var(--small-font-size);

}

.footer_links{
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
  
}

.footer_link:hover{
  color: var(--fist-color-lighter);
}

.footer_socials{
  /* display: flex; */
  /* căn đều các phần tử  */
  /* justify-content: center; */
}
.footer_social{
  font-size: 1.25rem;
  margin-right: var(--mb-1-5);
  
}

.footer_social:hover{
  color: var(--fist-color-lighter);
}

.footer_copy{
  font-size: var(--smaller-font-size);
  text-align: center;
  color: var(--text-color-light);
  /* margin-top: 3rem; */
}

.footer_title,
.footer_subtitle,
.footer_link,
.footer_social{
  color: #fff;
}

/* ===================== scroll up =============== */
.scrollup{
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background-color: var(--fist-color);
  opacity: .8;
  padding: .1rem .3rem;
  border-radius: .4rem;
  z-index: var(--z-tooltip);
  transition: .4s;
}

.scrollup_icon{
  font-size: 1.5rem;
  color: #fff;
}

/* ---- show scroll up ------  */
.scroll_show{
  bottom: 5rem;
}

/* ============================ MEDIA MEDIUM ======================  */
@media screen and (min-width: 770px){
  .home_content{
   grid-template-columns: max-content 1fr 1fr;
  }
  .home_data{
    grid-column: initial;
  }

  .home_data a{
    margin: auto;
  }
  .home_img{
    justify-self: center;
  }
  .home_img img{
    height: 90%;
    width: 90%;
  }

  .about_container,
  .skills_container,
  .portfolio_content,
  .services_container,
  .contact_container,
  .footer_container
  {
    grid-template-columns: 1fr 1fr !important;
    /* background-color: khaki; */
  }

  .about_buttons{
    justify-self: center;
  }

  .qualification_sections{
    display: grid;
    grid-template-columns: .6fr;
    justify-content: center;
  }
  .portfolio_title{
    margin-top: 0 !important;
  }

  
}

@media screen and (min-width: 768px) {
  .container{
    margin-left: auto;
    margin-right: auto;
  }

  body{
    margin: 0;
  }

  .section{
    padding: 6rem 0 2rem;

  }

  .section_subtitle{
    margin-bottom: 4rem;
  }

  .header{
    top: 0;
    bottom: initial;
    border-radius: 0;

  }

  .header,
  .main,
  .footer_container{
    padding: 0 1rem;
  }

  .nav{
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }

  .nav_icon::before,
  .nav_close::before,
  .nav_toggle{
    display: none;
  }

  .nav_list{
    display: flex;
    column-gap: 2rem;
  }

  .nav_menu{
    margin-left: auto;
  }

  .home_container{
    row-gap: 5rem;
    column-gap: 2rem;
  }

  .about_container{
    column-gap: 5rem;
  }
  .about_img{
    width: 350px;
  }

  .about_description{
    text-align: initial;
  }

  .about_info{
    justify-content: space-between;
  }

  .about_buttons{
    justify-content: initial;
  }

  /* .qualification_sections{
    grid-template-columns: .5fr;
  } */

  .services_container{
    grid-template-columns: repeat(3, 218px) !important;
    justify-content: center;
  }

  .services_icon{
    font-size: 2rem;
  }

  .services_content{
    padding: 6rem 0 2rem 2.5rem;
  }
}


/* ------------ large display  */

@media screen and (min-width: 1024px) {
  .header,
  .main,
  .footer,
  .footer_container{
    padding: 0;
  }

  .header{
    border-radius: 0;
  }

  /* .home_social{
    transform: translateX(-5rem);
  } */

.services_container{
  grid-template-columns: repeat(3, 238px);
}

.protfolio_content{
  column-gap: 5rem;
}

.swiper-button-prev,
.swiper-button-next{
  font-size: 3rem;
}

.swiper-button-prev{
  left: -3.5rem;
}

.swiper-button-next{
  right: -3.5rem;
}

.contact_form{
  width: 460px;
}

.contact_inputs{
  grid-template-columns: repeat(2, 1fr);
}
}
.nav_link{
  text-transform: uppercase;
}
/* 2:35  */