style.css

 img {
     display: block;
     margin: auto auto auto 28%;
     max-width: 100%;
     padding-top: 10%;
 }

 @media (min-width: 700px) {
     img{
         display: block;
         margin: auto auto auto 40%;
         max-width: 100%;
         padding-top: 10%;
        }
 }
 ul {
     list-style-type: none;
     font-family: Arial, Helvetica, sans-serif;
     font-size: 15px;
 }

 li {
     float: left;
 }

 .right {
     float: right;
 }

 a {
     display: block;
     padding: 8px;
     text-decoration: none;
     color: #000;
 }

 a:hover {
     text-decoration: underline;
 }

 #Sbutton {
     display: inline-block;
     border: none;
     border-radius: 7%;
     background-color: #4285f4;
     text-align: center;
     text-decoration: none;
     font-size: 16px;
     padding: 8px 2px 0px 0px;
     color: #fff;
     width: 60px;
     height: 25px;
 }

 #abutton {
     color: white;
     text-decoration: none;
 }
#apps {
    margin: -3px 10px auto auto;
}
 input {
     display: block;
     margin: 3% auto auto auto;
     width: 500px;
     padding: 15px;
     color: rgba(0, 0, 0, .87);
     border: 1px solid #dfe1e5;
     border-radius: 30px;
     outline: none;
     background: url(Icons/google-search.png) 10px 10px/25px no-repeat, url(Icons/google-microphone.png) 99% 10px /25px no-repeat;
     padding-left: 40px;
 }

 .Gbutton {
     display: inline-block;
     text-align: center;
     margin: 20px auto auto 30%;
     background-image: -webkit-linear-gradient(top,#f8f8f8,#f1f1f1);
     background-color: #f8f9fa;
     color: #5F6368;
     border: 1px solid #f8f9fa;
     border-radius: 5px;
 }
 @media (min-width: 700px) {
     .Gbutton{
         margin: 20px auto auto 40%;
     }
 }
 .Gbutton:hover {
     text-decoration: none;
     border: 1px solid #dadce0;
 }

 .Lbutton {
    display: inline-block;
    text-align: center;
    margin: 10px auto auto 1%;
    background-image: -webkit-linear-gradient(top,#f8f8f8,#f1f1f1);
    background-color: #f8f9fa;
    color: #5F6368;
    border: 1px solid #f8f9fa;
    border-radius: 5px;
}
.Lbutton:hover {
    text-decoration: none;
    border: 1px solid #dadce0;
}

#footer {
    font-family: Arial, Helvetica, sans-serif;
    position: fixed;
    bottom: 0;
    width: 92%;
    height: 25px;
    background: #f2f2f2;
    border-top: 1px solid #e4e4e4;
}