:root{

  --color-light-easy:rgb(248, 249, 250);
  --color-light-medium:rgb(233, 236, 239);
  --color-light-hard:rgb(222, 226, 230);
  --color-light-harder:rgb(206, 212, 218);
  --color-light-dark:rgb(173, 181, 189);
  --color-dark-easy: rgb(108, 117, 125);
  --color-dark-medium:rgb(73, 80, 87); 
  --color-dark-hard:rgb(52, 58, 64); 
  --color-dark-harder:rgb(33, 37, 41); 


}
.switch {
    font-size: 10px;
    position: relative;
    display: inline-block;
    width: 50px;
    height: 25px;
    margin-bottom: 5px;
  }
  
  .switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-light-dark);
    transition: .4s;
    border-radius: 30px;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    border-radius: 20px;
    left: 3px;
    bottom: 2.5px;
    z-index: 2;
    background-color: #e8e8e8;
    transition: .4s;
  }
  
  .sun svg {
    fill:#ebcb57;
    position: absolute;
    top: 3px;
    left: 28px;
    z-index: 1;
    width: 20px;
    height: 20px;
  }
  
  .moon svg {
    fill: rgb(226, 232, 232);
    position: absolute;
    top: 4px;
    left: 3px;
    z-index: 1;
    width: 18px;
    height: 18px;
  }
  
  .uk img {
    
    position: absolute;
    top: 4px;
    left: 28px;
    z-index: 1;
    width: 18px;
    height: 18px;

  }
  
  .spain img {
    
    position: absolute;
    top: 4px;
    left: 4px;
    z-index: 1;
    width: 18px;
    height: 18px;
 
  }
  .sun svg {
    animation: tilt 5s linear infinite;
  }
  
.moon svg {
    animation: tilt 5s linear infinite;
  }
 
  
  @keyframes tilt {
   
    0% {
      transform: rotate(0deg);
    }
  
    25% {
      transform: rotate(-10deg);
    }
  
    75% {
      transform: rotate(10deg);
    }
  
    100% {
      transform: rotate(0deg);
    }
  }
  
  .input:checked + .slider {
    background-color: var(--color-light-dark);
  }
  
  .input:focus + .slider {
    box-shadow: 0 0 1px var(--color-light-dark);
  }
  
  .input:checked + .slider:before {
    transform: translateX(24px);
  }