Код не меняет размер окошка ваш запрс

*{
    margin: 0;
    padding: 0;  
}

input[type="text"], input[type="password"], input[type="search"] {
    color: #5d5d5d;
    width: 60%;
    padding: 12px;
}

.header{
    background-color: darkslateblue;
    height: 177px;
    font-size: 0.8em;
    margin-left: 0px;
    margin-right: 0px;
    min-width: 900px;
}

.main, .logo, .menubar, .site_content, .footer {
margin-left: auto;
margin-right: auto;
}
.logo {
    width: 800px;
    padding-bottom: 40px;
}
.logo h1, .logo h2 {
    font: normal 300% "centuru gothic", arial, sans-serif;
    margin: 0 0 0 9px;
}
.logo_text h1, .logo_text h1 a, .logo_text h1 a:hover{
padding: 22px 0 0 0;
color:#fff;
letter-spacing: 0.1em;
text-decoration: none;
}
.logo_text h2 {
    font-size: 0.9em;
    padding: 4px 0 0 0;
    color: #999; 
}
.menubar{
    width: 900px;
    height: 46px;
}
ul.menu{
    float: right;
}
ul.menu li{
    float: left;
    padding: 0 0 0  9px;
    list-style: none;
    margin: 1px 2px 0 0;
}
ul.menu li a {
    font: normal 100% "trebuchet ms", sans-serif;
    display: block;
    height: 20px;
    padding: 6px 35px 5px 28px;
    color: #fff;
    text-decoration: none;
}
ul.menu li.selected a {
color: #aeb002;
}
ul.menu li a:hover {
    color: #e4ec04;
}
.site_content{
    width: 880px;
    overflow: hidden;
    margin: 20px auto 0 auto;
    background-color: white;
}
.sidebar_container{
    float: right;
    width: 224px;
}
.sidebar{
    float: right;
    width: 222px;
    padding: 5%;
    margin: 0 0 16px 0;
    border: solid 1px #f2f2f2;
    border-radius: 5px;
    background-color: #f9f9f9;
}