@charset "UTF-8";
:root {
  --screen-width: 320px;
  --screen-height: 560px;
  --header-bg-color :#00000;
  --splash-bg-color: #582eff;
}

.nav__toggle {
  display: inline-block;
  position: absolute;
  z-index: 10;
  padding: 0;
  border: 0;
  background: white;
  outline: 0;
  right: 15px;
  top: 15px;
  cursor: pointer;
  border-radius: 50%;
  -webkit-transition: background-color .15s linear;
  transition: background-color .15s linear;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.nav__toggle:hover, .nav__toggle:focus {
  background-color: rgba(0, 0, 0, 0.5);
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.nav__menu {
  display: -webkit-box;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
          flex-direction: column;
  -webkit-box-pack: center;
          justify-content: center;
  height: var(--screen-height);
  position: relative;
  z-index: 5;
  visibility: hidden;
}
.nav__item {
  opacity: 0;
  -webkit-transition: all 0.3s cubic-bezier(0, 0.995, 0.99, 1) 0.3s;
  transition: all 0.3s cubic-bezier(0, 0.995, 0.99, 1) 0.3s;
}
.nav__item:nth-child(1) {
  -webkit-transform: translateY(-40px);
          transform: translateY(-40px);
}
.nav__item:nth-child(2) {
  -webkit-transform: translateY(-80px);
          transform: translateY(-80px);
}
.nav__item:nth-child(3) {
  -webkit-transform: translateY(-120px);
          transform: translateY(-120px);
}
.nav__item:nth-child(4) {
  -webkit-transform: translateY(-160px);
          transform: translateY(-160px);
}
.nav__item:nth-child(5) {
  -webkit-transform: translateY(-200px);
          transform: translateY(-200px);
}
.nav__link {
  color: white;
  display: block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 5px;
  font-size: 1.25rem;
  text-decoration: none;
  padding: 1rem;
   box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.nav__link:hover, .nav__link:focus {
  outline: 0;
  background-color: rgba(0, 0, 0, 0.2);
   box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

.menuicon {
  display: block;
  cursor: pointer;
  color:black;
  -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
  -webkit-transition: 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.menuicon__bar, .menuicon__circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  stroke-linecap: round;
}
.menuicon__bar {
  -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  -webkit-transition: -webkit-transform .25s ease-in-out;
  transition: -webkit-transform .25s ease-in-out;
  transition: transform .25s ease-in-out;
  transition: transform .25s ease-in-out, -webkit-transform .25s ease-in-out;
}
.menuicon__circle {
  -webkit-transition: stroke-dashoffset .3s linear .1s;
  transition: stroke-dashoffset .3s linear .1s;
  stroke-dashoffset: 144.513262038;
  stroke-dasharray: 144.513262038;
}

.splash {
  position: absolute;
  top: 40px;
  right: 40px;
  width: 1px;
  height: 1px;
}
.splash::after {
  content: "";
  display: block;
  position: absolute;
  border-radius: Three values - border-radius: 15px 50px 30px;
  background-color: var(--splash-bg-color);
  width: 284vmax;
  height: 284vmax;
  top: -142vmax;
  left: -142vmax;
  -webkit-transform: scale(0);
          transform: scale(0);
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  -webkit-transition: -webkit-transform 0.5s cubic-bezier(0.755, 0.05, 0.855, 0.06);
  transition: -webkit-transform 0.5s cubic-bezier(0.755, 0.05, 0.855, 0.06);
  transition: transform 0.5s cubic-bezier(0.755, 0.05, 0.855, 0.06);
  transition: transform 0.5s cubic-bezier(0.755, 0.05, 0.855, 0.06), -webkit-transform 0.5s cubic-bezier(0.755, 0.05, 0.855, 0.06);
  will-change: transform;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

.nav:target > .splash::after,
.nav--open > .splash::after {
  -webkit-transform: scale(1);
          transform: scale(1);
}
.nav:target .menuicon,
.nav--open .menuicon {
  color: white;
  -webkit-transform: rotate(180deg);
          transform: rotate(180deg);
}
.nav:target .menuicon__circle,
.nav--open .menuicon__circle {
  stroke-dashoffset: 0;
}
.nav:target .menuicon__bar:nth-child(1), .nav:target .menuicon__bar:nth-child(4),
.nav--open .menuicon__bar:nth-child(1),
.nav--open .menuicon__bar:nth-child(4) {
  opacity: 0;
}
.nav:target .menuicon__bar:nth-child(2),


.nav--open .menuicon__bar:nth-child(2) {
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
}
.nav:target .menuicon__bar:nth-child(3),
.nav--open .menuicon__bar:nth-child(3) {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}
.nav:target .nav__menu,
.nav--open .nav__menu {
  visibility: visible;
}
.nav:target .nav__item,
.nav--open .nav__item {
  opacity: 1;
  -webkit-transform: translateY(0);
          transform: translateY(0);
}

body {
  background-color: #ffffff;
  font-family: 'Roboto';
  min-height: 100vh;
  display: -webkit-box;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
          flex-direction: column;
  -webkit-box-pack: center;
          justify-content: center;
}

.viewport {
  width: var(--screen-width);
  height: var(--screen-height);
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  background-color: white;
}

.header {
  height: 5rem;
  background-color: var(--header-bg-color);

}

.main {
  padding: 20px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  grid-auto-rows: 130px;
  grid-gap: 20px;
   box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    border-radius: 15px 50px;

}
.gallery__item {
  height: 100%;
 border-radius: 15px 50px;
 background-color:#ffffff;
   box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);

}

    .gallery__item:hover, .gallery__item:focus {


}