body {
    font: verdana,arial,helvetica,sans-serif;
    background-color: white;
    min-height: 100%;
    position: relative;
    z-index: 1;
    margin: 0px;
    padding: 0px;
}

.block {
    display: block;
    clear: both;
}

#header {
    height: 19px;
    background-color: LightGray;
    color: black;
    border-bottom: 1px solid silver;
}

#header_sidebar {
    float: right;
    clear:both;
}

#main {
    height: 2000px;
    clear:both;
}

#menu {
    height: 19px;
    background-color: Gainsboro;
}

#menu_sidebar {
    float: right;
    background-color: white;
    clear:both;
}

#main {
    clear:left;
}

#main_content {
    margin: 5px;
}

#main_sidebar {
    float: right;
    min-height: 100%;
    width: 300px;
    background-color: white;
    clear: both;
    padding: 5px;
}

#footer {
    clear: both;
}

.clearleft {
    clear: left;
}

.post {
    background-color: rgb(248, 248, 248);
    padding: 5px;
}

.post .post_rank {
    float: left;
    padding: 23px 10px 0 10px;
}

.post .post_score {
    float: left;
    text-align: center;
    padding: 5px 10px 0 10px;
}

.post .post_thumbnail {
    float: left;
    padding: 0px 4px 0 0;
}

.post .post_content {
    float: left;
}


#loginsignup {
    border:1px solid black;
}

#loginsignup input[type="radio"] {
    opacity: 0;
    display: none;
    visibility: hidden;
}

.btn {
    background: #1babbb;
    color: #fff;
    cursor: pointer;
    display: block;
    font-family: "open sans";
    font-size: 13px;
    height: 40px;
    float: left;
    line-height: 35px;
    margin-right: 1px;
    text-align: center;
    width: 100px;
    opacity: 0.8;
    transition: all 0.4s;
}

.btn:hover {
    opacity: 1;
}





#loginsignup input:checked + label {
    background: #fff;
    opacity: 1;
    box-shadow: 1px 0 0 0 rgba(0,0,0,0.3);
    color: #1babbb;
}

#login_content , #signup_content {
    height: 200px;
    width: 100%;
    box-shadow: 2px 2px 0 0 rgba(0,0,0,0.3);
    opacity: 0;
    display: none;
    transition: all 0.4s;
}

.btn-1:checked ~ #loginsignup_content #login_content ,
.btn-2:checked ~ #loginsignup_content #signup_content {
    display: block;
    opacity: 1;
}