.sobre-sec1 {
    background: url('sobre-fundoa.png') center/cover no-repeat;
    height: 100vh; 
    max-height: 450px;
    width: 100%;
    display: flex;
    align-items: center;
}

.sobre-container1 {
    margin: 0 auto;
    text-align: center;
    padding: 20px;
    max-height: 450px;
}

@media (max-width: 700px) {
  .sobre-sec2 {
    margin: 50px 15px;
}
}