.page_404 {
 text-align: center;
 margin-top: 50px;
}
.content404{
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    width: 50%;
    margin-left: 25%;

}

.content404 img{
    width: 50%;
    border-radius: 5px;
    margin: auto;
}
.content404 a {
    width: 40%;
    height: 60px;
    margin: auto;
    margin-top: 25px;
    align-items: center;
}

@media (max-width: 991px) {

.content404 img{
    width: 80%;
    border-radius: 5px;
    margin: auto;
}
.content404 a {
    width: 60%;
    height: 60px;
    margin: auto;
    margin-top: 25px;
    align-items: center;
}

}