@media (max-width: 750px) {
    main {
        flex-direction: column;
    }
}

body {
    margin: 0;
}
header #logo-contain {
    float: left;
}
header #welcome-head {
    float: right;
}
header {
    padding: 5px;
    border-bottom: 1px solid black;
    background-color: #eee;
    margin-bottom: 5px;
}
#logo-contain {
    text-decoration: none;
    color: initial;
}
main {
    display: flex;
    background-color: #fff;
}
article#content {
    flex: 6;
    padding: 15px;
}
aside#main-sidebar {
    /* flex: 1; */
    padding: 10px;
    border: 1px solid gray;
    margin: 5px;
}
aside#main-sidebar li {
    margin-bottom: 3px;
}
/* aside#main-sidebar.collapsed {
    flex: 0;
    width: 0px;
} */
.clear {
    clear: both;
    display: block;
}

#error-contain.no-error {
    display: none;
}
#error-contain.has-error {
    border: 1px solid black;
    border-radius: 5px;
    color: darkred;
    background-color: beige;
    padding: 5px;
}
footer {
    padding: 15px;
}
footer .col-1 {
    color: darkgray;
    font-size: 85%;
}