body {
  background-color: beige;
}

div {
  background: beige;
}

h1 {
  font-family: Arial, Helvetica, sans-serif;
}

#input {
  position: relative;
}

.center {
  text-align: center;
}

.button {
  font-size: 24px;
  color: black;
  border: 2px solid red;
}

.credits {
  position: fixed;
  bottom: 0;
  float: right; 
}

@media only screen and (max-width: 768px) {
  .centercontent {
    font-size: xx-large;
    position: relative;
  }

  .timelist {
    list-style-type: none;
    position: relative;
    width: 100px;
    min-height: 20px;
    border: 1px solid red;
  }

  .start {
    position: absolute;
    bottom: 0;
  }

  .stop {
    position: absolute;
  }

  .buttondiv {
    float: right;
  }
}

@media only screen and (min-width: 768px){
  .centercontent {
    font-size: xx-large;
    position: absolute;
    top: 50%;
    left: 50%;
    -o-transform: translateX(-50%) translateY(-50%);
    -ms-transform: translateX(-50%) translateY(-50%);
    -moz-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translate(-50%,-50%);
    transform: translate(-50%,-50%);
  }

  .timelist {
    list-style-type: none;
    position: absolute;
    width: 100px;
    height: 85%;
    border: 1px solid red;

  }

  .buttondiv {
    position: fixed;
    bottom: 0;
    left: 50%;
    -o-transform: translateX(-50%) translateY(-50%);
    -ms-transform: translateX(-50%) translateY(-50%);
    -moz-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translate(-50%,-50%);
    transform: translate(-50%);
  }