body {
/*        font-family: Verdana, Lucida, Helvetica, Arial, sans-serif;*/
        font-size: 80%;
}

form {
    border: none;
    margin: 0;
    text-align: center;
}

input {
    font-family: Verdana, Lucida, Helvetica, Arial, sans-serif;
    visibility: visible;
    border: none;
    color: Black;
    background-color: white;
    vertical-align: middle;
    text-align: center;
}

#center_content {
        position: absolute;
        top: 100px;
        left: 190px;
        font-size: 80%;
        width: 600px;
}

#center_content input {
    background-color: gray;
}

#default {
        font-family: Verdana, Lucida, Helvetica, Arial, sans-serif; 
        font-weight: bold;
        position: absolute;
        top: 25px;
        left: 45px;
        text-align: center;
}

#left_side_menu {
        font-family: Verdana, Lucida, Helvetica, Arial, sans-serif; 
        position: absolute;
        top: 20px;
        left: 20px;
        font-size: 80%;
        width: 115px;
        text-align: center;
}

#left_side_menu a:link {
        color: blue;
        font-weight: normal;
        text-decoration: none;
}

#left_side_menu a:hover {
        color: blue;
        font-weight: bold;
        text-decoration: none;
}

#left_side_menu a:visited {
        text-decoration: none;
        color: black;
        font-weight: bold;
}

#center_table {
        width: 700px;
        height: 430px;

        position: absolute;
        top: 20px;
        left: 150px;
        padding: 0 10px 0 10px;
}

#copyright {
        border-top: solid 1px #53A3D9;
        position: absolute;
        top: 1000px;
        left: 150px;
        width: 720px;
        text-align: center;
        color: black;
        font-size: 70%;
}

#hora {
        position: absolute;
        top: 20px;
        left: 885px;
        font-size: 80%;
        text-align: center;
}

#side_content_sensores {
        position: absolute;
        top: 20px;
        left: 885px;
        font-size: 80%;
        text-align: center;
}

#side_content_sensores h1 {
        font-size: 100%;
        color: #c8c8c8;
}

#side_content_sensores a:link {
        text-decoration: none;
        color: black;
        font-weight: bold;
}

#side_content_sensores a:visited {
        color: black;
        font-weight: bold;
        text-decoration: none;
}

#side_content_sensores a:hover {
        color: blue;
        font-weight: normal;
        text-decoration: none;
}

#side_content_utilizadores {
        position: absolute;
        top: 190px;
        left: 885px;
        font-size: 80%;
}

#side_content_utilizadores h1 {
        font-size: 100%;
        color: #c8c8c8;
}

#side_content_utilizadores a:link {
        text-decoration: none;
        color: black;
        font-weight: bold;
}

#side_content_utilizadores a:visited {
        color: black;
        font-weight: bold;
        text-decoration: none;
}

#side_content_utilizadores a:hover {
        color: blue;
        font-weight: normal;
        text-decoration: none;
}