.exam-content {
    background: lightgrey;
    padding: 10px;
}

.exam-content input[type=submit]{
    padding: 10px;
    margin: 10px;
}

.exam-title {

}

.exam-title h1{
    color: red;
}

.exam-title h2{
    color: blue;
}

.exam-title h3{
    color: green;
    font-style: italic;
}

.exam-title h4{
    color: green;
    font-style: italic;
}

.exam-section {
    background: white;
    padding: 10px;
    margin: 10px;
}

/*Bài số*/
.exam-section h1{
    font-size: 22pt;
    color: blue;
}

/*Content*/
.exam-section h2{
    font-size: 16pt;
}

/*Note*/
.exam-section h3{
    font-size: 14pt;
    font-style: italic;
    color: green;
}

/*Số liệu*/
.exam-section h4{
    font-size: 14pt;
    color: red;
}

.exam-figure {
    border: solid 1px black;
    padding: 10px;
    margin: 10px;
}

.exam-figure-img {

}

.exam-figure-note {
    font-size: 18pt;
    font-style: normal;
    font-weight: 800;
}

.exam-question {
    background: #eeeeee;
    padding: 10px;
    margin: 10px;

    font-size: 13pt;
    font-style: italic;
}

.exam-question input[type=text]{
    padding: 10px;
    width: 300px;
}

.exam-question input[type=radio]{
    margin: 20px;
}

.exam-question input[type=checkbox]{
    margin: 20px;
}

/*Câu số*/
.exam-question h1 {
    font-size: 16pt;
    font-style: italic;
    color: blue;
}

/*Content*/
.exam-question h2 {
    font-size: 14pt;
}

/*Note*/
.exam-question h3 {
    font-size: 12pt;
    font-style: normal;
    color: green;
}



td {
    border: solid 1px black;
}

th {
    border: solid 1px black;
    padding: 10px;
}

footer {
    background: grey;
    color: white;
    padding: 10px;
    margin-top: 20px;
}

.button-nopbai {
    margin-left: 30px;
    padding: 10px;
}






footer {
    width: 100%;
    background-color: #9b9b9b;
    padding: 15px;
    margin-right: 1000px;
    padding-right: 10px;
}
header {
    display: flex;
}
header h1{
    margin: 0px;
    padding-left: 20px;
    color: darkblue;
}
header h2{
    margin: 0px;
    padding-top: 10px;
    padding-left: 20px;

}
header .vpo-logo {
    display: block;
}
header .vpo-logo img {
    width: 80px;
}
header .vpo-title {
    display: block;
}