I am currently working on a web application that has a similar layout to Slack. I am facing an issue where the page doesn't take up the full width and height as intended. The problem seems to be that it sometimes only occupies half of the screen while other times it extends further, but the left navigation bar does not have consistent dimensions. In particular, the top 60% of the left navigation appears with a different background color compared to the bottom 40%.
I have tried various solutions including setting 'height:100%' and 'height:100vh' for *, html, and body elements, but none seem to work as expected.
* {
font-size: 16px;
margin: 0;
padding: 0;
}
.app {
display: flex;
flex-direction: row;
}
.leftNav {
border-right: 1px solid black;
width: 17%;
padding: 0px;
margin: 0;
background-color: lightslategray;
color: white;
}
.leftNav .title {
font-weight: 500;
padding-top: 10px;
padding-left: 10px;
}
.main {
display: flex;
flex-direction: column;
justify-content: flex-start;
width: 100%;
}
.main .messagesListContainer {
flex: 1;
display: flex;
flex-direction: column;
justify-content: flex-end;
}
.main .messagesList {
padding: 5px;
}
.main .newMessage {
width: 100%;
}
.messagesList {
max-height: 450px;
overflow: auto;
}
.messagesEntry {
margin: 5px;
border-bottom: 1px solid black;
}<div class="app">
<div class="leftNav">
<div class="title"> Channels </div>
<div>
Channel 1
</div>
<div>
Channel 2
</div>
</div>
<div class="main">
<div class="bar">
<Navbar>
Navbar goes here
</Navbar>
</div>
<div class="messagesListContainer">
<div class="messagesList">
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</div>
<form>
<div>
<input placeholder='input' />
</div>
</form>
</div>
</div>
</div>