html, body {
  height: 100%;  /* Set the height of html and body to 100% */
  margin: 0;     /* Remove default margin */
  padding: 0;    /* Remove default padding */
}

body {
  width: 100%;
  background: #00000013;   /* Set the width of body to 100% */
}

.header {
  width: 100%;
  text-align: left;
  background: yellow;
  padding-top: 25px;
  padding-bottom: 25px;
  padding-left: 40px;
}
.child {
  display: inline-block;
  vertical-align: middle;
}
.MainContainer {
  background: white;
  margin-left: 50px;
  margin-right:50px;
  padding: 2rem 2rem;
  text-align: center;
  border-radius: 20px;
  margin-top: 50px;
}
.SubContainer {
  display: inline-block;
  padding: 1rem 1rem;
  vertical-align: middle;
}
.SubContainer img{
  width: 100%;
  margin-left: 100px;
}


/* Media Queries for responsiveness */
@media (max-width:858px) {
  .MainContainer {
    background: white;
    margin-left: 20px;
    margin-right:20px;
    text-align: center;
    border-radius: 20px;
    margin-top: 20px;
  }
  .MainContainer h1{
    font-size: 15px;
    color: red;
  }
  .MainContainer h3{
    font-size: 10px;
  }

  .SubContainer img{
    width: 100%;
    margin-top: -30px;
    margin-bottom: -30px;
    margin-left: 0px;
  }
}