music-player/src/App.scss

$breakpoint-mobile: 720px;
$breakpoint-tablet: 1540px;

.App {
  height: auto;
 text-align: center;
  background: black;

}

a {
  text-decoration: none;
  color: white;
}

span {
  color: #dbc9c9;
  margin-left: 5px;
}

a:hover {
  color: lawngreen;
  text-decoration: none;
}

h3 {
  color: white;
  @media(max-width: $breakpoint-tablet) {
    font-size: 20px;
  }
}

h2 {
  color: white;
  @media(max-width: $breakpoint-tablet) {
    font-size: 20px;
  }
}

button {
  color: white;
  background: none;
  font-weight: 70;
  text-decoration: none;
  outline: none;
  border: 2px solid;
  border-radius: 1px;
  transition: 0.2s;
}
button:hover { background: rgba(255,255,255,.2); }
button:active { background: white; }

input {
  background: rgba(26, 26, 26, 0.82);
  color: white;
}

.App-logo {
  margin: 6px;
  height: 100px;
  @media(max-width: $breakpoint-tablet) {
  height: 80px;
}
}

.logo-large {
  height: 700px;
  @media (max-width: $breakpoint-tablet) {
    height: 400px;
    margin-left: -100px;
  }
}

.Header {
  position: fixed;
  top: 0px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  background: #000000;
  -webkit-box-shadow: 0.2em 0.2em 5px rgba(122, 122, 122, 0.37);
  box-shadow: 0.2em 0.2em 5px rgba(122, 122, 122, 0.376);
  h3 {
    margin-top: 30px;
  }
  h3:hover {
    color: lawngreen;
  }

}

main {
  background-image: url("background.jpg");
  background-repeat: no-repeat;
  background-attachment:fixed;
  background-position:  200px 0px;
  overflow: auto;
  margin-top: 112px;
  height: 80vh;
  display: flex;
  flex-direction: row;
  @media (max-width: $breakpoint-tablet) {
    margin-top: 92px;
  }
}

.Aside {
  height: 80vh;
  top: 114px;
  position: fixed;
  width: 430px;
  background-color: red;
  @media (max-width: $breakpoint-tablet) {
    width: 320px;
    top: 96px;
  }
}

.Content {
  margin-left: 440px;
  margin-bottom: 120px;
}

.Avatar {
  img {
    min-height: 60px;
    min-width: 60px;
    max-height: 60px;
    max-width: 60px;
    border-radius: 30px;
  }
}

.Spoiler {
  cursor: pointer;
}

.SpoilerContent {
  cursor: pointer;
  background: dodgerblue;
}

footer {
  width: 100%;
  height: 100px;
  background-color: #303030;
  position: fixed;
 bottom: 0px;
  .Player {
    margin-top: 10px;
    button {
      margin: 5px;
    }

    .currentTime {
      width: 30%;
    }

  }
}


.LoginButtons {
  display: flex;
  flex-direction: row;
     margin-top: 40px;
  margin-right: 20px;
}

.RegColumn {
  display: flex;
  flex-direction: column;
}


.LoginColumn {
  display: flex;
  flex-direction: column;
  margin-top: 30px;
  margin-right: 20px;
}

.Tracks {
  text-align: left;
  padding: 2px;
  margin: 2px;
  border: 1px solid dodgerblue;
}




.btn {
  background: none;
  border: none;
}


.dropdown-menu {
  z-index: 1000;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: #000000;
  text-align: center;
  h3 {
    color: lawngreen;
  }
}



.dropdown-button {
  font-size: 20px;
  width: 100%;
  border-radius: 3px;
}

.checkpass {
  color: white;
}

.my-playlists {
  margin-top: 8px;
}

.drop-zone {
   p {
     color: rgba(124, 252, 0, 0.76);
   }
}

.Users {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
}

.hello-column {
  display: flex;
}



.list1a {
  margin: 4px;
  padding:4px;
  list-style-type: none;
  counter-set: none;
}
.list1a li {
  border: 2px solid rgba(78, 232, 14, 0.47);
  background: none;
  position: relative;
  margin: 2px;
  padding: 4px;
}


.list1a li:hover {
  z-index: 1;
}
.list1a li:before {
  border: 2px solid #337AB7;
  position: absolute;
  top: -14px;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: bold;
  color: #337AB7;
  background: #F7FAFD;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
}
.list1a li:hover:before {
  background: #337AB7;
  color: #FFF;
  -webkit-transform: translate(-12px, 0);
  -ms-transform: translate(-12px, 0);
  -o-transform: translate(-12px, 0);
  transform: translate(-12px, 0);
}
.list1a li:after {
  content: "";
  position: absolute;
  -webkit-transition-duration: 0.4s;
  transition-duration: 0.4s;
  -webkit-transition-property: width;
  transition-property: width;
  z-index: -1;
  background: #FFF;
  height: 100%;
  left: 0;
  top: 0;
  width: 0;
}
.list1a li:hover:after {
  width: 100%;
}