The only workable css solution I found was to add min-width to .item and .timeline.
Check on codepen: https://codepen.io/magom001/pen/rJOejw
/*! HTML5 Boilerplate v6.0.1 | MIT License | https://html5boilerplate.com/ */
/*
* What follows is the result of much research on cross-browser styling.
* Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
* Kroc Camen, and the H5BP dev community and team.
*/
/* ==========================================================================
Base styles: opinionated defaults
========================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html {
color: #222;
font-size: 1em;
line-height: 1.4;
}
/*
* Remove text-shadow in selection highlight:
* https://twitter.com/miketaylr/status/12228805301
*
* Vendor-prefixed and regular ::selection selectors cannot be combined:
* https://stackoverflow.com/a/16982510/7133471
*
* Customize the background color to match your design.
*/
::-moz-selection {
background: #b3d4fc;
text-shadow: none;
}
::selection {
background: #b3d4fc;
text-shadow: none;
}
/*
* A better looking default horizontal rule
*/
hr {
display: block;
height: 1px;
border: 0;
border-top: 1px solid #ccc;
margin: 1em 0;
padding: 0;
}
/*
* Remove the gap between audio, canvas, iframes,
* images, videos and the bottom of their containers:
* https://github.com/h5bp/html5-boilerplate/issues/440
*/
audio,
canvas,
iframe,
img,
svg,
video {
vertical-align: middle;
}
/*
* Remove default fieldset styles.
*/
fieldset {
border: 0;
margin: 0;
padding: 0;
}
/*
* Allow only vertical resizing of textareas.
*/
textarea {
resize: vertical;
}
/* ==========================================================================
Browser Upgrade Prompt
========================================================================== */
.browserupgrade {
margin: 0.2em 0;
background: #ccc;
color: #000;
padding: 0.2em 0;
}
/* ==========================================================================
Author's custom styles
========================================================================== */
html {
height: 100%;
overflow: hidden;
}
body {
min-height: 100%;
}
nav {
width: 100%;
display: flex;
align-items: center;
justify-content: space-between;
}
img {
height: 50px;
width: auto;
}
@media (max-width: 767px) {
button {
display: none;
}
}
.wrapper {
position: absolute;
top: 50px;
left: 180px;
bottom: 0;
width: calc(100% - 180px);
overflow-x: auto;
display: inline-block;
}
.timeline {
position: relative;
left: 0;
right: 0;
min-width: 960px;
display: flex;
flex-direction: row;
flex-wrap: nowrap;
border-bottom: 1px solid black;
border-top: 1px solid black;
}
.timeline::after {
content: '';
display: table;
clear: both;
}
.timeline .date {
position: relative;
width: 60px;
height: 50px;
flex-shrink: 0;
flex-basis: 60px;
flex-grow: 1;
}
.timeline .date span {
display: inline-block;
width: 100%;
height: 100%;
text-align: center;
line-height: 50px;
}
.timeline .date::before {
content: '';
position: absolute;
height: calc(100vh - 125px);
margin-top: 50px;
left: 50%;
background-color: black;
width: 1px;
}
.timeline .time-tag {
width: 60px;
height: 25px;
background-color: blue;
position: absolute;
top: 50%;
transform: translateY(-50%);
left: 30px;
}
.timeline .time-tag::before {
content: '';
position: absolute;
height: calc(100vh - 87px);
width: 3px;
background-color: blue;
left: calc(50% - 2px);
}
.item {
position: relative;
min-width: 960px;
height: 50px;
background-color: rgba(0,200,10,0.3);
z-index: 3;
}
/* ==========================================================================
Helper classes
========================================================================== */
/*
* Hide visually and from screen readers
*/
.hidden {
display: none !important;
}
/*
* Hide only visually, but have it available for screen readers:
* https://snook.ca/archives/html_and_css/hiding-content-for-accessibility
*
* 1. For long content, line feeds are not interpreted as spaces and small width
* causes content to wrap 1 word per line:
* https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe
*/
.visuallyhidden {
border: 0;
clip: rect(0 0 0 0);
-webkit-clip-path: inset(50%);
clip-path: inset(50%);
height: 1px;
margin: -1px;
overflow: hidden;
padding: 0;
position: absolute;
width: 1px;
white-space: nowrap; /* 1 */
}
/*
* Extends the .visuallyhidden class to allow the element
* to be focusable when navigated to via the keyboard:
* https://www.drupal.org/node/897638
*/
.visuallyhidden.focusable:active,
.visuallyhidden.focusable:focus {
clip: auto;
-webkit-clip-path: none;
clip-path: none;
height: auto;
margin: 0;
overflow: visible;
position: static;
width: auto;
white-space: inherit;
}
/*
* Hide visually and from screen readers, but maintain layout
*/
.invisible {
visibility: hidden;
}
/*
* Clearfix: contain floats
*
* For modern browsers
* 1. The space content is one way to avoid an Opera bug when the
* `contenteditable` attribute is included anywhere else in the document.
* Otherwise it causes space to appear at the top and bottom of elements
* that receive the `clearfix` class.
* 2. The use of `table` rather than `block` is only necessary if using
* `:before` to contain the top-margins of child elements.
*/
.clearfix:before,
.clearfix:after {
content: " "; /* 1 */
display: table; /* 2 */
}
.clearfix:after {
clear: both;
}
/* ==========================================================================
EXAMPLE Media Queries for Responsive Design.
These examples override the primary ('mobile first') styles.
Modify as content requires.
========================================================================== */
@media only screen and (min-width: 35em) {
/* Style adjustments for viewports that meet the condition */
}
@media print,
(-webkit-min-device-pixel-ratio: 1.25),
(min-resolution: 1.25dppx),
(min-resolution: 120dpi) {
/* Style adjustments for high resolution devices */
}
/* ==========================================================================
Print styles.
Inlined to avoid the additional HTTP request:
http://www.phpied.com/delay-loading-your-print-css/
========================================================================== */
@media print {
*,
*:before,
*:after {
background: transparent !important;
color: #000 !important; /* Black prints faster:
http://www.sanbeiji.com/archives/953 */
box-shadow: none !important;
text-shadow: none !important;
}
a,
a:visited {
text-decoration: underline;
}
a[href]:after {
content: " (" attr(href) ")";
}
abbr[title]:after {
content: " (" attr(title) ")";
}
/*
* Don't show links that are fragment identifiers,
* or use the `javascript:` pseudo protocol
*/
a[href^="#"]:after,
a[href^="javascript:"]:after {
content: "";
}
pre {
white-space: pre-wrap !important;
}
pre,
blockquote {
border: 1px solid #999;
page-break-inside: avoid;
}
/*
* Printing Tables:
* http://css-discuss.incutio.com/wiki/Printing_Tables
*/
thead {
display: table-header-group;
}
tr,
img {
page-break-inside: avoid;
}
p,
h2,
h3 {
orphans: 3;
widows: 3;
}
h2,
h3 {
page-break-after: avoid;
}
}
