.certi_white{
  background-color: #ffff;
  padding: 10px 20px;
  margin-top: 50px;
  margin-bottom: 50px;
}

.certificate_img{
width: 90%;
border:#51a145 1px solid;
margin-top: 30px;
}
ul {
list-style-type: none;
}
.c_box{
margin-top: 40px;
}
.certificate_p{
    color:#51a145;
    font-weight:600;
    margin-top:15px;
    font-size: 18px;
}
/******************************************** (min-width: 320px) and (max-width:1000px) *******************************************/
@media only screen and (min-width: 320px) and (max-width:480px)
{
.certificate_img{
    width: 70%;
    text-align: center;
}
.c_box{
    margin-top: 0px;
}
}
/******************************************** (min-width: 320px) and (max-width:1000px) *******************************************/
@media only screen and (min-width: 480px) and (max-width:768px)
{
.certificate_img{
    width: 90%;
    text-align: center;
}
.c_box{
    margin-top: 0px;
}
}
/******************************************** (min-width: 320px) and (max-width:1000px) *******************************************/
@media only screen and (min-width: 768px) and (max-width:1023px)
{
.certificate_img{
    width: 75%;
    text-align: center;
}
.c_box{
    margin-top: 0px;
}
}