* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #1355f6;
  overflow: hidden;
}

#app {
  width: 350px;
  height: 350px;
  display: grid;
  place-items: center;
}
#app ul {
  position: relative;
  width: 350px;
  height: 50px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-radius: 35px;
  background: rgba(255, 255, 255, 0.65);
  box-shadow: 0 12.5px 10px rgba(0, 0, 0, 0.08), 0 100px 80px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}
#app ul li {
  list-style: none;
  display: grid;
  place-items: center;
  font-family: "montserrat";
  color: #1355f6;
  z-index: 10;
  cursor: pointer;
}
#app ul .focus-el {
  position: absolute;
  left: 0;
  top: 0;
  width: calc(100% / 3);
  height: 100%;
  border-radius: 35px;
  background: #fff;
  box-shadow: 0 12.5px 10px rgba(0, 0, 0, 0.015), 0 100px 80px rgba(0, 0, 0, 0.03);
}
#app ul .focus-el.el--2 {
  left: calc(-100% / 3);
}

.support {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 10px;
  display: flex;
}
.support a {
  margin: 0 10px;
  color: #e1f2fb;
  font-size: 1.8rem;
  backface-visibility: hidden;
  transition: all 350ms cubic-bezier(0.38, -0.12, 0.24, 1.91);
}
.support a:hover {
  transform: scale(1.1);
}