.popup {  
    display: none;  
    position: fixed;  
    z-index: 1;  
    left: 0;  
    top: 0;  
    width: 100%;  
    height: 100%;  
    overflow: auto;  
    background-color: rgb(0,0,0);  
    background-color: rgba(0,0,0,0.4);  
    padding-top: 60px;  
}  

.popup-content {  
    background-color: #fefefe;  
    margin: 5% auto;  
    padding: 20px;  
    border: 1px solid #888;  
    width: 80%;  
    max-width: 500px;  
}  

.close {  
    color: #aaaaaa;  
    float: right;  
    font-size: 28px;  
    font-weight: bold;  
}  

.close:hover,  
.close:focus {  
    color: black;  
    text-decoration: none;  
    cursor: pointer;  
}  

.contrato {  
    margin: 20px;  
}