How can I fix my CSS grid?

Question

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Currently, I am trying to make a calculator app that will be able to do a lot of calculations. However, the buttons I have made (not functioning yet, so no need to worry about the JavaScript) all have gaps in between each other. It might be easier to run my HTML and CSS yourself to see that issue, but there are just big gaps in between my buttons caused by the CSS grid.

Question: How can I fix my CSS grid so that there are not large gaps between the buttons?

What it should look like: You've probably seen a calculator before, all of the buttons are supposed to be side-by-side without any gap in between (at least, not a big one).

HTML

<!DOCTYPE html>
<html lang="en">

<html>
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE-edge">
        <meta name="viewport", content="width=device-width, initial-scale=1.0">
        <meta name="author" content="nuh uh">
        <link rel="stylesheet" href="styles.css">

        <title>Calculator App</title>
    </head>

    <body>
        <div id="calculator-grid">
            <div id="output">
                <div id="previous-operand"></div>
                <div id="current-operand"></div>
            </div>

            <button class="buttons2">Clear All</button>
            <button class="buttons2">Delete</button>
            <button class="buttons">/</button>
            <button class="buttons">1</button>
            <button class="buttons">2</button>
            <button class="buttons">3</button>
            <button class="buttons">*</button>
            <button class="buttons">4</button>
            <button class="buttons">5</button>
            <button class="buttons">6</button>
            <button class="buttons">+</button>
            <button class="buttons">7</button>
            <button class="buttons">8</button>
            <button class="buttons">9</button>
            <button class="buttons">.</button>
            <button class="buttons">0</button>

            <button class="buttons">x<sup>y</sup></button>
            <button class="buttons"><sup><sup>y</sup></sup>√x</button>
            <button class="buttons">log<sub>x</sub>(y)</button>
            <button class="buttons">Mod</button>

            <button class="buttons">(</button>
            <button class="buttons">)</button>
            <button class="buttons">e</button>

            <button class="buttons">Sin</button>
            <button class="buttons">Cos</button>
            <button class="buttons">Tan</button>
            <button class="buttons">π</button>
            <button class="buttons">Csc</button>
            <button class="buttons">Sec</button>
            <button class="buttons">Cot</button>
            <button class="buttons">i</button>

            <button class="buttons">Sin<sup>-1</sup></button>
            <button class="buttons">Cos<sup>-1</sup></button>
            <button class="buttons">Tan<sup>-1</sup></button>
            <button class="buttons">φ</button>
            <button class="buttons">Csc<sup>-1</sup></button>
            <button class="buttons">Sec<sup>-1</sup></button>
            <button class="buttons">Cot<sup>-1</sup></button>
            <button class="buttons">></button>

            <button class="buttons">Sinh</button>
            <button class="buttons">Cosh</button>
            <button class="buttons">Tanh</button>
            <button class="buttons"><</button>
            <button class="buttons">Csch</button>
            <button class="buttons">Sech</button>
            <button class="buttons">Coth</button>
            <button class="buttons">≥</button>

            <button class="buttons">Sinh<sup>-1</sup></button>
            <button class="buttons">Cosh<sup>-1</sup></button>
            <button class="buttons">Tanh<sup>-1</sup></button>
            <button class="buttons"><</button>
            <button class="buttons">Csch<sup>-1</sup></button>
            <button class="buttons">Sech<sup>-1</sup></button>
            <button class="buttons">Coth<sup>-1</sup></button>

            <button class="buttons">EE</button>
            <button class="buttons">Rad</button>
            <button class="buttons">Deg</button>
            <button class="buttons2">=</button>
        </div>
    </body>
</html>

CSS

*, *::before, *::after {
    box-sizing: border-box;
    font-family: Gotham Rounded, sans-serif;
    font-weight: 400;
}

body {
    padding: 0;
    margin: 0;
    background: linear-gradient(to right, #00fffb, #25ff29);
}

#calculator-grid {
    display: grid;
    justify-content: center;
    align-content: center;
    min-height: 100vh;
    grid-template-columns: repeat(4, 100px);
    grid-template-rows: minmax(120px, auto) repeat(17, 100px);
}

#calculator-grid > button {
    cursor: pointer;
    border: 1px solid black;
    outline: none;
}

#calculator-grid > button:hover {
    background-color: rgb(191, 183, 183, .9);
}

.buttons {
    height: 50px;
    width: 75px;
    font-size: 14pt;
    background-color: rgb(227, 197, 197);
}

.buttons2 {
    height: 50px;
    width: 100px;
    font-size: 16pt;
    font-weight: 600;
}

#myConsole {
    background-color: black;
    color: white;
    min-height: 100px;
}

What I have tried:

I tried just getting rid of the grid (or parts of it) and it just didn't work. I'm not really sure what else to do.

Posted 7-Feb-24 8:07am

That New Coder

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Graeme_Grant · Accepted Answer · 2024-02-07T20:00:00

Here you go:

CSS

*, *::before, *::after {
    box-sizing: border-box;
    font-family: Gotham Rounded, sans-serif;
    font-weight: 400;
    font-size: 16px;
}

body {
    padding: 0;
    margin: 0;
    background: linear-gradient(to right, #00fffb, #25ff29);
}

#calculator-grid {
    --_button-width: 70px;
    --_gap-size: 8px;
    display: grid;
    justify-content: center;
    align-content: center;
    gap: var(--_gap-size);
    grid-template-columns: repeat(4, var(--_button-width));
    grid-template-rows: repeat(16, 1fr);
    width: fit-content;
    margin-inline: auto;
    margin-block: 2rem;
}

#calculator-grid > button {
    cursor: pointer;
    border: 1px solid black;
    outline: none;
    font-size: 14pt;
}

#calculator-grid > button:hover {
    background-color: rgb(191, 183, 183, .9);
}

#output  {
    grid-column: 1 / -1;    /* all columns */
    grid-row: 1 / 2;        /* top row */
    height: 50px;
    background-color: red;
}

.buttons {
    background-color: rgb(227, 197, 197);
}

.buttons2 {
    width: calc((var(--_button-width) * 3 + var(--_gap-size)) / 2);
    font-weight: 600;
    background-color: green;
}

#calculator-grid button:nth-of-type(1) {
    grid-column: 1 / 2;     /* first 2 columns */
    justify-self: start;
}

#calculator-grid button:nth-of-type(2) {
    grid-column: 2 / 4;     /* first 3 & 4 columns */
    justify-self: end;
}

#calculator-grid button:last-of-type {
    grid-column: 3 / 5;     /* last 2 columns */
    justify-self: stretch;
    width: auto;
}

.myConsole {
    background-color: black;
    color: white;
    min-height: 100px;
}

I've removed fix sizes and allowed the grid to set the sizing.

Notes:
* Elements are positioned by using grid syntax.
* The buttons will fit the grid cell.
* For the output, I have set it to the top row.
* The first 2 oversized buttons I have set to 1.5 of 3 cells (including the gaps) using calc(..). So if you change the --_button-width or --_gap-size variables, the button will resize perfectly
* Lastly, for aesthetics, I've made the last button fit 2 cells. No calc required, simply tell it to stretch to fit.

Working example on CodePen: Grid Formatting[^]