html {
line-height: 1.15;
-webkit-text-size-adjust: 100%;
}
body {
margin: 0;
}
main {
display: block;
}
h1 {
font-size: 2em;
margin: 0.67em 0;
}
hr {
box-sizing: content-box;
height: 0;
overflow: visible;
}
pre {
font-family: monospace, monospace;
font-size: 1em;
}
a {
background-color: transparent;
}
abbr[title] {
border-bottom: none;
text-decoration: underline;
text-decoration: underline dotted;
}
b,
strong {
font-weight: bolder;
}
code,
kbd,
samp {
font-family: monospace, monospace;
font-size: 1em;
}
small {
font-size: 80%;
}
sub,
sup {
font-size: 75%;
line-height: 0;
position: relative;
vertical-align: baseline;
}
sub {
bottom: -0.25em;
}
sup {
top: -0.5em;
}
img {
border-style: none;
}
button,
input,
optgroup,
select,
textarea {
font-family: inherit;
font-size: 100%;
line-height: 1.15;
margin: 0;
}
button,
input {
overflow: visible;
}
button,
select {
text-transform: none;
}
button,
[type="button"],
[type="reset"],
[type="submit"] {
-webkit-appearance: button;
}
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
border-style: none;
padding: 0;
}
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
outline: 1px dotted ButtonText;
}
fieldset {
padding: 0.35em 0.75em 0.625em;
}
legend {
box-sizing: border-box;
color: inherit;
display: table;
max-width: 100%;
padding: 0;
white-space: normal;
}
progress {
vertical-align: baseline;
}
textarea {
overflow: auto;
}
[type="checkbox"],
[type="radio"] {
box-sizing: border-box;
padding: 0;
}
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
height: auto;
}
[type="search"] {
-webkit-appearance: textfield;
outline-offset: -2px;
}
[type="search"]::-webkit-search-decoration {
-webkit-appearance: none;
}
::-webkit-file-upload-button {
-webkit-appearance: button;
font: inherit;
}
details {
display: block;
}
summary {
display: list-item;
}
template {
display: none;
}
[hidden] {
display: none;
}
/*============================== Common styles ==============================*/
* {
-webkit-box-sizing: border-box;
box-sizing: border-box;
margin: 0;
padding: 0;
}
html {
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
}
html {
height: 100%;
}
body {
min-height: 100%;
display: flex;
flex-direction: column;
}
/* làm thẻ con ngay bên dưới và ngay trên thẻ