html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
    /* background-color: #9c9a9a; */
    background-color: rgb(59, 58, 58);
    font-family: "Open Sans", sans-serif;
}
.container-login {
    height: 100%;
    
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-image {
    width: 180px;
}

.spinner {
    display: none;
    margin: auto;
    margin-top: 14rem;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite; 
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}