.modalanuncio {
    width: 100%;
    height: 100vh;
    background: rgba(27,46,102,.8);
     position: fixed;
    
    top: 0;
    left: 0;
    display: flex;
    animation: modal 1.8s 4s;
    animation-fill-mode: forwards;
    visibility: hidden;
    opacity: 0;
    z-index: 100000;
}

.contenidoanuncio {
    margin: auto;
    width: 50vh;
    height: 50vh;
    background-color: #fff;
    border-radius: 2px;
}

.logoanuncio {
    margin-left: 11%;
    margin-top: 60px;
    margin-bottom: 35px;
    width: 250px;
    height: 150px;
}

.infoanuncio {
    text-decoration: none;
    padding: 5px;
    border-radius: 3px;
    background: #1B2E66;
    color: #fff;
    width: 130px;
    margin-left: 29%;
}
#cerraranuncio {
    display: none;
    
}
#cerraranuncio + label {
    position: fixed;
    color: #1B2E66;
    font-size: 17px;
    z-index: 500000000;
    background: #fff;
    height: 25px;
    width: 25px;
    border-radius: 50%;
    right: 2vh;
    top: 2vh;
    line-height: 24px;
    cursor: pointer;
    text-align: center;
    
    animation: modal 1.8s 4s;
    animation-fill-mode: forwards;
    visibility: hidden;
    opacity: 0;
}

#cerraranuncio:checked + label, #cerraranuncio:checked ~ .modalanuncio {
    display: none;
}
@keyframes modal {
    100% {
    visibility: visible;
    opacity: 1;
    }
}