body{
    margin:0;
    font-family: "Tahoma";
    background:#f2f2f2;
}


#intro{
    position:fixed;
    top:50%;
    left:50%;
    font-size:50px;
    color:#0a3;
    font-weight:bold;
    transform:translate(-50%,-50%);
    animation:spin 2s linear;
    text-shadow:0 0 10px #000, 0 0 20px #0f0;
}
@keyframes spin{
    from {transform:translate(-50%,-50%) rotateY(0deg);}
    to   {transform:translate(-50%,-50%) rotateY(360deg);}
}

#page-content{
    display:none;
}

.header{
    background:#064d20;
    color:white;
    padding:20px;
    text-align:center;
    font-size:35px;
    font-weight:bold;
}

.container{
    padding:20px;
}

.tools input, .tools select{
    padding:10px;
    font-size:18px;
    margin:5px;
}

.tools button{
    padding:10px 20px;
    background:#064d20;
    color:white;
    border:none;
    margin:5px;
    cursor:pointer;
    border-radius:5px;
}

table{
    width:100%;
    border-collapse:collapse;
    margin-top:20px;
    background:white;
}

th, td{
    border:1px solid #333;
    padding:8px;
    text-align:center;
}

#pagination{
    text-align:center;
    margin-top:20px;
}

#pagination button{
    padding:10px 15px;
    border:none;
    background:#064d20;
    color:white;
    margin:3px;
    cursor:pointer;
}


#popup{
    display:none;
    position:fixed;
    top:0; left:0;
    width:100%; height:100%;
    background:rgba(0,0,0,0.7);
}

#popup-content{
    width:50%;
    margin:100px auto;
    background:white;
    padding:20px;
    border-radius:10px;
    position:relative;
}

#close-popup{
    position:absolute;
    right:15px;
    top:10px;
    cursor:pointer;
    font-size:22px;
    color:red;
}