body {
  background-color: #f4f4f4;
 }

 .header {
  background-color: #fff;
  box-shadow: 1px 1px 4px 0 rgba(0,0,0,.1);
  position: relative;
  top: -10px;
  left:0;  
  width: 100%;
  z-index:1;
  float:left; 
}
 
 .logo-container2 img {
   width: 500px;
   height: 300px;
   position: relative;
   left: 250px;
   top: 90px;
   
 }
 
 section#quem-somos {
   margin-top: 30px;
   padding: 40px;
   text-align: center;
 }
 
 .container2 {
   max-width: 800px;
   margin: 0 auto;
 }
 
 
 .logo-container2 img {
   width: 500px;
   height: 300px;
   position: relative;
   left: 250px;
   top: 90px;
   
 }
 
 section#quem-somos {
   margin-top: 30px;
   padding: 40px;
   text-align: center;
 }
 
 .container2 {
   max-width: 800px;
   margin: 0 auto;
 }
 
 @media screen and (max-width: 600px) {
  .logo-container2 img {
    width: 100%; /* Faça as imagens ocuparem toda a largura em telas menores */
    left: 0;
    top: 0;
  }

  section#quem-somos {
    padding: 5%;
  }
}