.dark-mode {
        background-color: #333;
        color: #fff;
    }
   .light-mode {
        background-color: #fff;
        color: #333;
    }
   .switch {
        position: absolute;
        top: 10px;
        right: 10px;
    }
   .switch-btn {
        position: relative;
        display: inline-block;
        width: 60px;
        height: 34px;
        border-radius: 10px 10px 10px 10px;
    }
    .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px;
        background-color: #2f8dff;
        color: #fff;
        transition: all 0.3s ease-in-out;
    }
    .header:hover{
        background-color: #9bb4ff;
        transition: all 0.3s ease-in-out;
    }
   .slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ccc;
        border-radius: 10px;
        transition: .4s;
    }
   .slider:before {
        position: absolute;
        content: "";
        height: 26px;   
        width: 26px;
        left: 4px;
        bottom: 4px;
        border-radius: 10px;
        background-color: white;
        transition: .4s;
    }
    input:checked + .slider {
        background-color: #2196F3;
    }
    input:focus + .slider {
        box-shadow: 0 0 1px #2196F3;
    }
    input:checked + .slider:before {
        transform: translateX(26px);
    }
   .container {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        padding: 20px;
    }
   .project {
        flex-grow: inherit;
        width: 3000px;
        max-width: 100%;
        margin: 20px;
        border: 1px solid #ccc;
        border-radius: 5px;
        box-shadow: 0 0 10px #ccc;
        text-align: center;
        transition: all 0.3s ease-in-out;
    }
    .dark-mode .project:hover {
        background-color: #9bb4ff;
        box-shadow: 0 0 20px #ccc;
        transition: all 0.3s ease-in-out;
    }
    .project:hover{
        background-color: #fff0f0;
        box-shadow: 0 0 20px #999;
        transition: all 0.3s ease-in-out;
    }
   .project h2 {
        margin: 10px;
        font-size: 24px;
    }
   .project h4 {
        margin: 10px;
        font-size: 18px;
    }
   .project p {
        margin: 10px;
        font-size: 16px;
    }
    .project .desc {
        margin: 10px;
        font-size: 14px;
    }
   .project #updated-time {
        margin: 10px;
        font-size: 14px;
        color: #999;
    }
   .project button {
        margin: 10px;
        padding: 10px 20px;
        background-color: #2196F3;
        color: #fff;
        border: none;
        border-radius: 5px;
        font-size: 16px;
        cursor: pointer;
        transition: all 0.3s ease-in-out;
    }
   .project button:hover {
        background-color: #00bcd4;
        color: #fff;
        transform: translateY(-5px);
        transition: all 0.3s ease-in-out;
    }
    .project button::before{
        background-color: #2196F3;
        content: "";
        display: block;
    }
    button[id="back"]{
        background-color: #2196F3;
        color: #fff;
        border: #97cdfa;
        border-radius: 5px 5px 5px 5px; 
        transform: translateY(2);
        transition: all 0.3s ease-in-out;
    }
    button[id="back"]:hover{
        background-color: #00bcd4;
        color: #fff;
        transform: translateY(-2px);
        transition: all 0.3s ease-in-out;
        border-radius: 5px 5px 5px 5px;
    }
    .footer{
        background-color: gray;
        color: #fff;
        text-align: center;
        padding: 10px;
    }
    .footer p{
        margin: 0;
        font-size: 14px;
    }