.start-screen {
  min-width: 100%;
  height: 100%;
  position: relative;
  padding-bottom: 20px;
}
body {
    background: url('bg.png') no-repeat center center fixed;
    background-size: cover;
}
.bg-purplea {
    background-color: #270D72;
}

.start-screen-title {
  position: fixed;
  top: 20px;
  left: 80px;
  display: none;
}

[class*=tile-] {
  -webkit-transform: scale(0.8);
      -ms-transform: scale(0.8);
          transform: scale(0.8);
}

.tiles-group {
  margin-left: 0;
  margin-top: 50px;
}
@media all and (min-width: 768px) {
  .start-screen-title {
    display: block;
  }
  .start-screen {
    padding: 140px 80px 0 0;
  }
  .tiles-group {
    left: 100px;
  }
  .tiles-group {
    margin-left: 80px;
  }
}

.tile-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.tile-center form {
    width: 90%; 
}

.tile-center input {
    width: 100%; 
}
.tile-icona {
    display: block;
    margin: 0 auto;
    position: relative;
    top: 10%;
    transform: translateY(-50%); 
    max-width: 80%; 
    max-height: 80%; 
}
.tile-iconb {
    display: block;
    margin: 0 auto;
    position: relative;
    top: 10%;
    transform: translateY(-50%); 
    max-width: 70%; 
    max-height: 70%; 
}
.tile-iconc {
    display: block;
    margin: 0 auto;
    position: relative;
    top: 10%;
    transform: translateY(-50%); 
    max-width: 80%; 
    max-height: 80%; 
}
.bottom-right-text {
    position: absolute;
    bottom: 10px; 
    right: 10px; 
    color: lightgray; 
    opacity: 0.5;
    font-size: 14px;
    pointer-events: none; 
}
.bottom-right-link {
    color: lightgray;
    text-decoration: none; 
    opacity: 0.5;
}