* {
    transition: all 0.25s;
  }
  
  body {
    margin: 0;
    padding: 0;
    background-color: steelblue;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-size: 120%;
  }
  
  #encabezado {
    width: 80vw;
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: white;
    border-radius: 10px;
    margin: 10px;
    padding: 10px;
  }
  
  .opcion {
    text-align: center;
    width: 70vw;
    background: white;
    
    border-radius: 10px;
    margin: 10px;
    padding: 10px;
    cursor: pointer;
  }
  
  .opcion:hover{
       background: lightgray;
  }