html {
    font-family: sans-serif;
    font-size: 16px;
  }
  body {
     position: absolute;
     top: 0;
     left:0;
     bottom: 0;
     right: 0;
     margin: 0 auto;
     width: 600px;
     min-width: 600px;
     max-width: 600px;
     padding: 1%;
     user-select: none;
  }
  
/* Estilos para el modo oscuro */
.dark-mode {
  background-color: black;
  color: white;
}

.dark-mode .foto {
  filter: invert(100%);
}
.dark-mode .texto {
    background-color: black;
    border-color: white; 
    color: white; 
}

.dark-mode textarea {
  background-color: black;
  border-color: white; 
  color: white; 
}

.dark-mode .barra {
  color:black; 
  background-Color:white;
}

.barra {
  color:white; 
  background-Color:black;
}

p {
    margin:0 0 3px 0;
    }

  textarea {
     resize: none;
     font-family: sans-serif;
     FONT-SIZE:16px; 
     border-radius:10px;
     border:solid  2px;
     background-color:white ;
     color:black;
   }

  .titulo{
    color:#3c8bed;
    font-size:35px;
    font-weight: bolder;
  }
  .bsolucion{
   border-radius: 10px;
   color:white;
   font-size:25px
  }
  
  .boton{
    border-radius: 10px;
    color:white;
    background-color: #3c8bed;
    border: solid 2px lightgrey;
    text-align: center;
    height: 40px;
    FONT-SIZE:25px;
    font-weight: bold;
  }
 
  .bmenu{
    border-radius: 10px;
    color:white;
    background-color: #3c8bed;
    border: solid 2px lightgrey;
    text-align: center;
    height: 40px;
    FONT-SIZE:30px;
    font-weight: bold;
    width:400px;
    margin:0 0 5px 0;
  }
  
  .bmenu2{
    border-radius: 10px;
    color:white;
    background-color: #3c8bed;
    border: solid 2px lightgrey;
    text-align: center;
    height: 40px;
    FONT-SIZE:30px;
    font-weight: bold;
    width: 148px;
    margin:0 0 5px 4px;
  }
  
  .volver{
    border-radius: 10px;
    color:white;
    background-color:#3c8bed;
    border: solid 2px lightgrey;
    text-align: center;
    FONT-SIZE:15px
    
  }

  .tactil{
    position: relative;
    border-radius: 15px;
    color:white;
    background-color: #3c8bed;
    border: solid 2px lightgrey;
    text-align: center;
    width : 40px;
    height: 40px;
    FONT-SIZE:30px;
    font-weight: bold;
    margin-left:30px;
    
   }
  .texto{
    FONT-SIZE:25px; 
    width:125px; 
    height:30px;
    font-weight: bold;
    border-radius: 10px;
    /*margin-right:35px;*/
    border: solid 2px;

  }

  .caja{
    overflow: hidden;
    border:none;
    margin:0;
    padding:0;
  }
/* los checkbox */
.switch-button {
    display: block;
    align-items: center;

}
.switch-button .switch-button__checkbox {
    display: none;
}
.switch-button .switch-button__label {
    background-color: grey;
    width: 32px;
    height: 16px;
    border-radius: 50px;
    display: inline-block;
    position: relative;
}
.switch-button .switch-button__label:before {
    transition: .2s;
    display: block;
    position: absolute;
    width: 16px;
    height: 16px;
    background-color:white;
    content: '';
    border-radius: 50%;
    box-shadow: inset 0px 0px 0px 1px lightgrey;
}
.switch-button .switch-button__checkbox:checked + .switch-button__label {
    background-color: #3c8bed;
}
.switch-button .switch-button__checkbox:checked + .switch-button__label:before {
    transform: translateX(16px);
}