html{
    height: auto;
}
.c_last{

}
.guun{
    align-items: flex-end;
    margin-right: 7%;
    display: flex;
    flex-direction: column;
}

@media (max-width: 770px){
    .c_img{
        width: 80%;
        margin-left: 10%;
    }
}
@media (min-width: 770px) and (max-width: 990px){
    .c_img{
        width: 50%;
        margin-left: 25%;
    }
}
@media (min-width: 1024px){
    .c_img{
        width: 100%;
    }
}