style.css

body{
    font: Arial, Helvetica, sans-serif;
}

#container {
    width: 1000px;
   /* border: 1px solid grey; */
    margin: 0 auto;
}

#brand{
    float: left;
}

h1 a{
    font-size: 50px;
    font-weight: 100;
    color: #861bbf;
    text-decoration: none;
}

#searchbox{
    float: right;
    background: linear-gradient(#E4F2B9, #B7E953);
    background: -webkit-linear-gradient(#E4F2B9, #B7E953);
    background: -o-linear-gradient(#E4F2B9, #B7E953);
    background: -moz-linear-gradient(#E4F2B9, #B7E953);
    width: 400px;
    height: 50px;
    padding: 20px 20px 0 20px;
    margin-top: 20px;
}

#header {
    height: 100px;
    padding: 10px 0;
}

.text {
    float: left;
    width: 200px;
    padding: 5px;
    font-size: 15px;
    color: #E36A0C;
    background: white url(images/search.png)
right center no-repeat;
    border: 1px solid #C8D83E;
}


.submit {
    float: right;
    padding: 5px;
    font-weight: bold;
    font-size: 15px;
    color: white;
    background: #A751D6;
}

.clear {
    clear: both;
}

#menu{
    height: 70px;
    background: linear-gradient(#F8F592, #D5D533);
    background: -webkit-linear-gradient(#F8F592, #D5D533);
    background: -o-linear-gradient(#F8F592, #D5D533);
    background: -moz-linear-gradient(#F8F592, #D5D533);
    padding: 7px 0;
}

ul{
    list-style: none;
}

#menu ul li{
    float: left;
    padding: 0 30px;
    height: 30px;
    border-right: 1px solid;
    color: #5D12E7;
}

#menu ul li a{
    text-decoration: none;
    text-transform: uppercase;
    font-size: 17px;
    color: #5D12E7;
    line-height: 30px;
    transition: font-size 0.3s ease;
    -webkit-transition: font-size 0.3s ease;
    -moz-transition: font-size 0.3s ease;
    -o-transition: font-size 0.3s ease;
    -ns-transition: font-size 0.3s ease;
}

#menu ul li:last-child{
    border-right: none;
}

#menu ul li a:hover, #menu ul li a.active{
    font-size: 20px;
    font-weight:  bold;
    color: #C34FDB;
}

#introduction {
    background: linear-gradient(#E5F2BB, #B7E952);
    background: -webkit-linear-gradient(#E5F2BB, #B7E952);
    background: -o-linear-gradient(#E5F2BB, #B7E952);
    background: -moz-linear-gradient(#E5F2BB, #B7E952);
    padding: 30px;
    margin: 16px 0;
}

#introduction h3{
    font-size: 45px;
    color: #316901;
    font-weight: normal;
}

#introduction p{
    font-size: 25px;
    color: #628F19;
    text-align: justify;
}
.sidebar {
    height: 500px;
    width: 420px;
    border: 1px solid  #BAF46F;
    border-radius: 20px;
    padding: 10px 30px;
}

.sidebar h3{
    color: #B314DB;
    font-size: 30PX;
}

.sidebar ul{
    padding-top: 8px
}

#leftsidebar ul li{
    padding: 3px 0 4px 10px;
    list-style-image: url(images/arrow.png)
}

#rightsidebar ul  li{
    padding: 16px 0 16px 70px;
    background: url(images/tick.png) no-repeat left center;
}

.sidebar ul li a{
    text-decoration: none;
    font-size: 20px;
    color: #5D12E7;
    transition: font-size 0.6s ease;
    -webkit-transition: font-size 0.6s ease;
    -moz-transition: font-size 0.6s ease;
    -o-transition: font-size 0.6s ease;
    -ns-transition: font-size 0.6 ease;
}

.sidebar ul li a:hover, .sidebar ul li a.active{
    text-decoration: none;
    color: #B314DB;
    font-size: 23px;
    font-weight: bold;
}

#leftsidebar {
    float: left;
}


#rightsidebar {
    float: right;
}

.footer {
    height: 60px;
    background: linear-gradient(#F6F390, #D5D533);
    background: -webkit-linear-gradient(#F6F390, #D5D533);
    background: -o-linear-gradient(#F6F390, #D5D533);
    background: -moz-linear-gradient(#F6F390, #D5D533);
    padding: 10px 30px;
    margin-top: 15px;
}