style.css

body {
    background-color: rgb(41, 41, 41);
    display: flex;
    justify-content: center;
}

button {
    background-color: black;
    color: azure;
}

.container {
    margin-top: 100px;
    display: inline;
    justify-content: center;
}

.toggle-switch {
    position: relative;
    justify-content: center;
    width: 40px;
    height: 24px;
    margin: auto;
  }
  
  .toggle-switch .toggle-input {
    display: none;
  }
  
  .toggle-switch .toggle-label {
    position: absolute;
    top: 0;
    left: 0;
    width: 40px;
    height: 24px;
    background-color: #dbdbdb;
    border-radius: 34px;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  .toggle-switch .toggle-label::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    background-color: #fff;
    box-shadow: 0px 2px 5px 0px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s;
  }
  
  .toggle-switch .toggle-input:checked + .toggle-label {
    background-color: #505050;
  }
  
  .toggle-switch .toggle-input:checked + .toggle-label::before {
    transform: translateX(16px);
  }
  
  .toggle-switch.light .toggle-label {
    background-color: #BEBEBE;
  }
  
  .toggle-switch.light .toggle-input:checked + .toggle-label {
    background-color: #9B9B9B;
  }
  
  .toggle-switch.light .toggle-input:checked + .toggle-label::before {
    transform: translateX(6px);
  }
  
  .toggle-switch.dark .toggle-label {
    background-color: #4B4B4B;
  }
  
  .toggle-switch.dark .toggle-input:checked + .toggle-label {
    background-color: #717171;
  }
  
  .toggle-switch.dark .toggle-input:checked + .toggle-label::before {
    transform: translateX(16px);
  }
  
  .bulb {
    width: 300px;
    height:300px;
    color: #fff;
  }