Moving a tag to the top of a todo bar - css

Question

The spent text with the teal background is meant to be a tag, and I want the tag to appear above the todo bar...kind of like this:
Like a small rectangle on top of a big one. So the tag would be on the top left corner of the todo bar. How would I achieve this? I've tried doing margin to the tag, but that did not work out at all.
CSS for the tag (style.css)
.tag {
color: white;
font-size: 15px;
font-weight: 400;
letter-spacing: 2px;
text-transform: uppercase;
background: #36d1dc;
padding: 3px;
border-radius: 5px;
border-bottom-left-radius: 0px;
border-bottom-right-radius: 0px;
}
React JS code for the tag part (Todo.js)
<li className={`todo-item${todo.completed ? "completed" : ""}`}>
{isSpent && <p className="tag">Spent</p>}
{isReceived && <p className="tag">Received</p>} ${text}
</li>
In case anyone needs the whole of the todo.css file: https://pastecode.io/s/s5XZ9e3DRW
If you need anymore information, or if my question was poorly phrased, please tell me. Any help is very much appreciated. Thank you!

Answer 1

I think if yow will separate the tag and the navbar to two different div tags and put them on main div something like:
<div id="wrapper">
<div id="top-left">top left div</div>
<div id="down">down side div</div>
</div>
and the css will be something like (using grid on the main div):
#wrapper {
display: grid;
}
#top-left {
background: green;
width: 250px;
float:left;
margin-right: 20px;
}
#down {
background: blue;
float:left;
width: 500px;
}
the result is:

Answer 2

I would go with something like this, where input:focus could be a class set on on .container, for example, if the input has any values.
I couldn't understand why you used li and p in your original code, because you need to override so much stuff to make it look nice.
Using "rem" over a fixed pixel value is also preferred if you want to create a responsive site, where you just override the font-size in the body to make everything scale.
.container {
position: relative;
display: flex;
}
body,
input {
padding: 1rem;
}
.container.selected > .todo-item,
input:focus ~ .todo-item {
transform: translateY(-1rem);
}
.todo-item {
position: absolute;
left: 1rem;
transform: translateY(1rem);
transition: transform 400ms;
}
.tag {
color: white;
font-size: 15px;
font-weight: 400;
letter-spacing: 2px;
text-transform: uppercase;
background: #36d1dc;
padding: 3px;
border-radius: 5px;
border-bottom-left-radius: 0px;
border-bottom-right-radius: 0px;
}
<div class="container">
<input type="number">
<div class="todo-item"><span class="tag">Spent</span></div>
<div style="padding-top: 1rem"><-- select this input</div>
</div>
<div class="selected container" style="padding-top: 2rem">
<input type="number">
<div class="todo-item"><span class="tag">Spent</span></div>
</div>

Answer 3

body {
background-color: #48AEE0;
}
.container {
height: 200px;
width: 500px;
display: flex;
flex-direction: column;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.tag {
color: white;
font-size: 15px;
font-weight: 400;
letter-spacing: 2px;
text-transform: uppercase;
background: #36d1dc;
padding: 3px;
width: 80px;
text-align: center;
border-radius: 5px;
border-bottom-left-radius: 0px;
border-bottom-right-radius: 0px;
}
.other {
margin: 0;
display: inline-flex;
flex-direction: column;
}
input {
height: 30px;
width: 200px;
border: white;
margin: 0;
}
<div class="container">
<div class="tag">spent</div>
<div class="others">
<input type="text">
</div>
</div>