* {
  font-family: "Roboto Condensed", sans-serif;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: #7dbfff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navigation-tab {
  height: 150px;
  width: 600px;
  background-color: #fff;
  box-shadow: 0 50px 30px 0 rgba(0, 0, 0, 0.175);
  border-radius: 20px 20px 90px 90px;
  overflow: hidden;
  border: 15px solid #fff;
  display: flex;
  position: relative;
  flex-shrink: 0;
}
.navigation-tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 130px;
  flex-shrink: 0;
  cursor: pointer;
  transition: 0.3s;
  position: relative;
  z-index: 2;
}
.navigation-tab-item.active {
  width: 210px;
}
.navigation-tab-item.active .navigation-tab__icon {
  transform: translate(0px, -10px);
}
.navigation-tab-item.active .navigation-tab__txt {
  opacity: 1;
  transform: translate(0, 10px);
}
.navigation-tab-overlay {
  border-radius: 20px;
  background-color: #e4f2ff;
  height: 100%;
  width: 210px;
  position: absolute;
  left: 0;
  top: 0;
  transition: 0.3s;
}
.navigation-tab__icon {
  display: block;
  color: #4298e7;
  transition-duration: 0.3s;
  line-height: 1;
  transform: translate(0, 11px);
}
.navigation-tab__txt {
  display: block;
  font-weight: 400;
  font-size: 20px;
  color: #4298e7;
  opacity: 0;
  transition-duration: 0.3s;
  transform: translate(0, 20px);
  user-select: none;
}