DEV Community: MoonLight

add google font

MoonLight — Wed, 05 Jan 2022 11:13:50 +0000

@media different

MoonLight — Wed, 05 Jan 2022 08:50:03 +0000

if we change the browser screen size we will see the text back ground colure will be changed.

@media

MoonLight — Wed, 05 Jan 2022 08:26:51 +0000

Grid Area

MoonLight — Tue, 04 Jan 2022 16:59:57 +0000

    grid-area: 1/1 / 1/3; 
    /* start->row1 column1 */
    /* end->row1 column3 */

grid - gap and fr

MoonLight — Tue, 04 Jan 2022 16:28:00 +0000

https://youtu.be/N731aTpo8TI
https://youtu.be/UeGPNHAADVw

grid column percentage

MoonLight — Tue, 04 Jan 2022 16:01:32 +0000

.container{
    display:grid;
    grid-template-rows:repeat(3,100px);
    /*grid-template-columns: repeat(2,100px);*/
    /*🔅*/
    grid-template-columns: 30% 70%;
    border: 3px solid lightgray;
    height:100vh;
}


.box{
    background-color:gold;
}

<!DOCTYPE html>
<html lang="en">
<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">
    <title>Document</title>
    <link rel="stylesheet" href="style.css"/>
</head>
<body>

<!-- 💛 -->
<div class="container">
    <div class="box">A</div>
    <div class="box">B</div>
    <div class="box">C</div>
    <div class="box">D</div>
</div>


</body>
</html>

Grid

MoonLight — Thu, 30 Dec 2021 11:41:30 +0000

grid examples

also we can write like this

.container{
    display:grid;
    /*grid-template-rows: 100px 100px 100px;*/
    grid-template-rows:repeat(3,100px);
    /*grid-template-columns: 100px 100px;*/
    grid-template-columns: repeat(2,100px);
    border: 3px solid lightgray;
}

reminder
aligning items

.container{
    display:grid;
    /*grid-template-rows: 100px 100px 100px;*/
    grid-template-rows:repeat(3,100px);
    /*grid-template-columns: 100px 100px;*/
    grid-template-columns: repeat(2,100px);
    border: 3px solid lightgray;
    /* 💛 */
    justify-items: center;
}

.container{
    display:grid;
    /*grid-template-rows: 100px 100px 100px;*/
    grid-template-rows:repeat(3,100px);
    /*grid-template-columns: 100px 100px;*/
    grid-template-columns: repeat(2,100px);
    border: 3px solid lightgray;
    /* 💛 */
    justify-items: center;
    align-items: center;
}

.container{
    display:grid;
    /*grid-template-rows: 100px 100px 100px;*/
    grid-template-rows:repeat(3,100px);
    /*grid-template-columns: 100px 100px;*/
    grid-template-columns: repeat(2,100px);
    border: 3px solid lightgray;
    /* 1️⃣ */
    justify-items: center;
    align-items: center;
    /* 2️⃣ */
    justify-content: center;
}

flex box

MoonLight — Wed, 29 Dec 2021 19:08:13 +0000

.container{
    border: 3px solid lightgray;
    display: flex;
    /* ⚜️ */
    flex-direction: column-reverse;
}

.container{
    border: 3px solid lightgray;
    display: flex;
    /* ⚜️ */
    flex-direction: row;
}

.container{
    border: 3px solid lightgray;
    display: flex;
    /* ⚜️ */
    flex-direction: row-reverse;
}

main axis cross axis

❗️justify-content along the main axis
❗️align-items along the cross axis

.container{
    border: 3px solid lightgray;
    display: flex;
    /* * * * */ 
    flex-direction: row;
}

.container{
    border: 3px solid lightgray;
    display: flex;
    /* * * * */ 
    flex-direction: row;
    /* row->main->use justify-content  */
    justify-content: flex-end;
}

.container{
    border: 3px solid lightgray;
    display: flex;
    /* * * * */ 
    flex-direction: row;
    /* row->main->use justify-content  */
    justify-content: center; 
}

justify-content: space-evenly;

justify-content: space-between;

.container{
    border: 3px solid lightgray;
    display: flex;
    /* * * * */ 
    flex-direction: row;
    /* row->main->use justify-content  */
    justify-content: center;
    /* row->cross -> use align-items */
    align-items:flex-end;
    height: 90vh; 
}

.container{
    border: 3px solid lightgray;
    display: flex;
    /* * * * */ 
    flex-direction: row;
    /* row->main->use justify-content  */
    justify-content: center;
    /* row->cross -> use align-items */
    align-items:center;
    height: 90vh; 
}

what happen if we changed height: vh?
height: 90vh;

height: 140vh; -> we should scroll the page

align-content

so if we add one more box we will see the box will be smaller!

so we should use flex-wrap: wrap;

but for beautifully that we use align-content

now I want to change -for example- box A position

floating elements

MoonLight — Wed, 29 Dec 2021 16:32:42 +0000

float

clear

use clear for left and right of box (clear both)

⛔️ problem

✅ fix

.tweet{
    border: 3px solid lightgrey;
    /* ⚜️ */
    overflow: hidden;
}

position

MoonLight — Tue, 28 Dec 2021 19:00:04 +0000

left:rem;
pushing from left ->

.box-2{
    background-color: tomato;
    /* ⚜️> */
    position: relative;
    left:5rem;
    bottom: 4rem;
    /* <⚜️ */
}

z-index: -1;

.box-2{
    background-color: tomato;
    /* ⚜️> */
    position: relative;
    left:4rem;
    bottom: 4rem;
    z-index: -1;
    /* <⚜️ */
}

z-index: 1;

add extra class

MoonLight — Tue, 28 Dec 2021 18:38:04 +0000

Css units

MoonLight — Tue, 28 Dec 2021 16:18:57 +0000

<div class="box"></div>

body{
    width: 300px;
}

.box {
    /* ⚜️ 50% of the width of body (300px) */
    width:50%;
    height: 100px;
    background-color:gold;
    border-top: 3px solid orange;
}

body{
    margin: 0px;
}

.box {
    /* ⚜️ 50% of the viewport */
    width:50vw;
    /* ⚜️ 100% of the viewport */
    height: 100vh;
    background-color:gold;
    border-top: 3px solid orange;
}

body{
    margin: 0px;
}


.box {
    /* ⚜️ because the font size defaults is 16 px
    so width will be 10 * 16 = 160 px */
    width:10em;
    height: 100vh;
    background-color:gold;
    border-top: 3px solid orange;
}

body{
    margin: 0px;
}

.box {
    /* ⚜️ change font size */
    font-size:20px;
    /* ⚜️ because the font size defaults is 16 px
    so width will be 10 * 20 = 200 px */
    width:10em;
    height: 100vh;
    background-color:gold;
    border-top: 3px solid orange;
}

استفاده از
rem
محاسبه رو آسون تر می کنه

html{
    /* 1️⃣ it means 62.5% of 16px = 10px 
    so 10px will be root font size!*/
    font-size:62.5%;
}

body{
    margin: 0px;
}

.box {
    /* 2️⃣ rem x root font size 
    the result will be 150 px*/
    width:15rem;
    height: 100vh;
    background-color:gold;
    border-top: 3px solid orange;
}