.head {
  position: relative;
  height: 60px;
  background: #fff;
  display: flex;
  align-items: center;
}

.nav-items {
  padding: 0;
  margin: 0 0 0 300px;
}

.nav-item {
  position: relative;
  list-style-type: none;
  display: inline-block;
  padding: 0 20px;
}

.nav-item a {
  display: inline-block;
  width: 64px;
  height: 21px;
  background-size: cover;
  background-repeat: no-repeat;
  text-decoration: none;
}

.nav-item .active::after {
  content: '';
  position: absolute;
  width: 50px;
  height: 5px;
  background: #ffe043;
  left: 50%;
  margin-left: -25px;
  bottom: -10px;
  border-radius: 5px;
  transition: all 2s;
}

.nav-item.home a {
  background-image: url('../assets/img/home-text.png');
}

.nav-item.about a {
  background-image: url('../assets/img/about-text.png');
}

.avatar {
  display: inline-block;
  width: 60px;
  height: 60px;
  background-image: url('../assets/img/avatar.png');
  background-size: cover;
  background-repeat: no-repeat;
  position: absolute;
  bottom: -30px;
  left: 250px;
  z-index: 1000;
}

.main-box {
  height: 750px;
  width: 100%;
  background-image: url('../assets/img/mian-background.png');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.footer {
  text-align: center;
  font-size: 15px;
  font-weight: 300;
}