* {
  box-sizing: border-box;
}

html,
body {
  font-family: "Nunito", sans-serif;
  height: 100%;
  width: 100%;
}



a {
  text-decoration: none;
}

.mobile-wrapper {
  display: table-cell;
  text-align: center;
  vertical-align: middle;
}
.mobile-wrapper .mobile-container {
  background: #fff;
  border: 20px solid #666;
  border-bottom-width: 80px;
  border-radius: 20px;
  box-shadow: 0 0 10px 10px rgba(0, 0, 0, 0.1);
  display: inline-block;
  height: 520px;
  margin: 0 30px;
  position: relative;
  width: 320px;
}
.mobile-wrapper .mobile-container::before {
  background: #555;
  border: 2px solid #4a4a4a;
  border-radius: 50%;
  bottom: -67px;
  content: "";
  display: block;
  height: 50px;
  left: 50%;
  position: absolute;
  width: 50px;
  transform: translateX(-50%);
  z-index: 1;
}

.content {
  background: aliceblue;
  display: block;
  height: 100%;
  overflow: hidden;
  width: 100%;
}
.content nav {
  background: #fff;
  border-bottom: 1px solid #ddd;
  height: 60px;
  position: relative;
}
.content .nav-links {
  display: block;
  position: absolute;
  top: 60px;
  left: 0;
  width: 100%;
}
.content .nav-links::before {
  background: rgba(0, 0, 0, 0.5);
  content: "";
  height: 100vh;
  left: 0;
  top: 0;
  position: absolute;
  opacity: 0;
  visibility: hidden;
  width: 100%;
  transition: all 0.3s;
}
.content .nav-links li {
  border-bottom: 1px solid #ddd;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: all 0.3s;
}
.content .nav-links li a {
  background: #fff;
  color: #404040;
  display: block;
  font-size: 18px;
  font-weight: 700;
  padding: 12px 20px;
  text-align: left;
  width: 100%;
  transition: all 0.3s;
}
.content .nav-links li a:hover {
  color: coral;
}

input[type=checkbox] {
  position: absolute;
  opacity: 0;
  visibility: hidden;
}
input[type=checkbox]:checked + label {
  border: 4px solid silver;
  border-radius: 50%;
  height: 28px;
  top: 16px;
  left: 18px;
  width: 28px;
  transform: rotate(-135deg);
}
input[type=checkbox]:checked + label::before {
  background: silver;
  top: 8px;
  left: 4px;
  width: 12px;
}
input[type=checkbox]:checked + label::after {
  background: silver;
  opacity: 1;
  top: 8px;
  left: 4px;
  visibility: visible;
  width: 12px;
}
input[type=checkbox]:checked + label:hover {
  border-color: coral;
}
input[type=checkbox]:checked + label:hover::before, input[type=checkbox]:checked + label:hover::after {
  background: coral;
}
input[type=checkbox]:checked ~ .nav-links::before {
  opacity: 1;
  visibility: visible;
}
input[type=checkbox]:checked ~ .nav-links li {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
input[type=checkbox]:checked ~ .nav-links li:nth-child(1) {
  transition-delay: 0s;
}
input[type=checkbox]:checked ~ .nav-links li:nth-child(2) {
  transition-delay: 0.1s;
}
input[type=checkbox]:checked ~ .nav-links li:nth-child(3) {
  transition-delay: 0.2s;
}
input[type=checkbox]:checked ~ .nav-links li:nth-child(4) {
  transition-delay: 0.3s;
}

label {
  background: none transparent;
  border: 4px solid coral;
  border-left: 0 solid transparent;
  border-right: 0 solid transparent;
  cursor: pointer;
  display: block;
  height: 24px;
  position: absolute;
  top: 18px;
  left: 20px;
  width: 24px;
  transition: all 0.2s;
}
label::before {
  background: coral;
  content: "";
  height: 4px;
  left: 0;
  position: absolute;
  top: 6px;
  width: 24px;
  transition: all 0.2s;
}
label::after {
  background: coral;
  content: "";
  height: 4px;
  left: 0;
  position: absolute;
  top: 6px;
  opacity: 0;
  visibility: hidden;
  width: 100%;
  transform: rotate(90deg);
  transition: all 0.2s;
}