.main { 
    background-color: #f7f7f7;
}

.partners {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;   
}

.partner-img {
    padding:1%;
    margin-bottom: 5%;
    background-color: #fff; 
    border: 1px solid #707070;
    border-radius: 25px;
}

.partners img {
    max-width:270px;
    height: 170px;
}

footer img {
    width: 200px;
    height: auto;
    border-radius: 2px;
}

@media only screen and (max-width: 500px) {
    .partners {
        justify-content: center;
     }
    
     .partners img {
        max-width:220px;
        height: 130px;
    }

    .partner-img {      
        border-radius: 5px;
     }   
  }

@media only screen and (min-width:501px) and (max-width: 768px) {
    .partner-img {      
       border-radius: 10px;
    }
    
    .partners img {
        max-width:200px;
        height: auto;
    }
  }

@media only screen and (min-width:769px) and (max-width: 1200px) {
    .partner-img {      
       border-radius: 10px;
    }
    
    .partners img {
        max-width:250px;
        height: auto;
    }
  }