style.css

   body{
    background-image: url('binary.jpg');
   }
   #app{
    width: 60%;
    margin: 50px auto;
    background-color: rgba(256, 256, 256, 0.5);
   }
   .center {
        text-align: center;
      }
      ul {
          list-style: none;
          padding: 0;
      }
      img {
          display: inline;
          width: 200px;
          height: 100px;
      }
      #footer {
          width: 100%;
          border-top: solid 5px red;
          background-color: black;
          position: fixed;
          bottom: 0;
          color: red;
          font-size: 50px;
      }
      html{
        box-sizing:border-box;
      }
      #input-parent {
    width: 160px;
    margin: 5% auto 50px;
    position: relative;
  }
  .guess{
    background-color: white;
    display:inline;
    font-size: 60px;
    border: 2px solid black;
    padding: 0 25px;
    border-radius: 10%;
  }
#player-input{
  border-radius: 50%;
  width: 160px;
  height: 160px;
  font-size:60px;
}
#submit{
  border-radius: 50%;
  width:60px
  height:60px;
  position:absolute;
  top:110px;
  left:110px;
}
#headers{
  background-color: black;
  color: white;
  border: 4px solid red;
}