.container {
    position: relative;
    max-width: auto;
    height: calc(100vh - 3px);
    width: 100;
    background-image: url('bg.jpg'); 
    background-color: black;
    color: white;
    border: 1px solid #87CEEB;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}



.earth {
    overflow: hidden;
    position: relative;
    width: 300px;
    height: 300px;
    color:black;
    border-radius: 70%;
    background-color:#87CEEB;
    margin: 20px auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}


.layer-crust {
    width: 110%;
    height: 50%;
    color: rgb(0, 0, 0);
    background-color: #87CEEB;
    border-bottom: 1px solid #ddd;
    padding: 10px;
    text-align: center;
    cursor: pointer;
}

.layer-mantle { 
        background-color: #d53529;
        width: 110%;
        color: rgb(0, 0, 0);
        height: 50%;
        border-bottom: 1px solid #ddd;
        padding: 10px;
        text-align: center;
        cursor: pointer;
    }


.layer-outer-core {
    width: 110%;
    color: black;
    height: 50%;
    border-bottom: 1px solid #ddd;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    background-color: #fce6a2;
}


.layer-inner-core {
    width: 110%;
    color: black;
    background-color: #87CEEB;
    height: 50%;
    padding: 10px;
    text-align: center;
    cursor: pointer;
}

.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    padding: 20px;
    border: 1px solid #ddd;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: none;
}

.popup.show {
    display: block;
}

.close {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 24px;
    cursor: pointer;
}

.btn {
    background-color: #4CAF50;
    color: #fff;
    margin-top: px;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.btn:hover {
    background-color: #3e8e41;
}