💎Set Font Size With Pixels
Setting the text size with pixels gives you full control over the text size:
📎Example:
-----------------------------
h1 {
font-size: 60px;
}
-----------------------------
💎Set Font Size With Em
To allow users to resize the text (in the browser menu), many developers use em instead of pixels.
1em is equal to the current font size. The default text size in browsers is 16px. So, the default size of 1em is 16px.
The size can be calculated from pixels to em using this formula: pixels/16=em
📎Example:
-----------------------------
h1 {
font-size: 3.5em;
}
-----------------------------
💎Set Font Size With REM
rem values are relative to the root html element, not to the parent element. That is, If font-size of the root element is 16px then 1 rem = 16px for all elements. If font-size is not explicitly defined in root element then 1rem will be equal to the default font-size provided by the browser (usually 16px).
When it comes to spacing and font-sizing, I prefer to use rem. Since rem uses root element’s font-size instead of its parent’s font-size.
📎Example:
-----------------------------
h1 {
font-size: 2.5rem;
}
-----------------------------
@html_css_tut
"w3schools .com,
medium. com "
Setting the text size with pixels gives you full control over the text size:
📎Example:
-----------------------------
h1 {
font-size: 60px;
}
-----------------------------
💎Set Font Size With Em
To allow users to resize the text (in the browser menu), many developers use em instead of pixels.
1em is equal to the current font size. The default text size in browsers is 16px. So, the default size of 1em is 16px.
The size can be calculated from pixels to em using this formula: pixels/16=em
📎Example:
-----------------------------
h1 {
font-size: 3.5em;
}
-----------------------------
💎Set Font Size With REM
rem values are relative to the root html element, not to the parent element. That is, If font-size of the root element is 16px then 1 rem = 16px for all elements. If font-size is not explicitly defined in root element then 1rem will be equal to the default font-size provided by the browser (usually 16px).
When it comes to spacing and font-sizing, I prefer to use rem. Since rem uses root element’s font-size instead of its parent’s font-size.
📎Example:
-----------------------------
h1 {
font-size: 2.5rem;
}
-----------------------------
@html_css_tut
"w3schools .com,
medium. com "
CSS Opacity
💎The opacity property specifies the opacity/transparency of an element.
💎The opacity property can take a value from 0.0 - 1.0. The lower value, the more transparent.
📎Example:
-------------------------------
img {
opacity: 0.5;
}
--------------------------------
@html_css_tut
"w3schools .com"
💎The opacity property specifies the opacity/transparency of an element.
💎The opacity property can take a value from 0.0 - 1.0. The lower value, the more transparent.
📎Example:
-------------------------------
img {
opacity: 0.5;
}
--------------------------------
@html_css_tut
"w3schools .com"
Transparency using RGBA
💎If you do not want to apply opacity to child elements, Use RGBA
📎Example:
/* Green background with 30% opacity */
------------------------------
div {
background: rgba(76, 175, 80, 0.3) ;
}
--------------------------------
@html_css_tut
"w3schools .com"
💎If you do not want to apply opacity to child elements, Use RGBA
📎Example:
/* Green background with 30% opacity */
------------------------------
div {
background: rgba(76, 175, 80, 0.3) ;
}
--------------------------------
@html_css_tut
"w3schools .com"
CSS The !important Rule
💎The !important rule in CSS is used to add more importance to a property/value than normal.
💎In fact, if you use the !important rule, it will override ALL previous styling rules for that specific property on that element!
💎It is good to know about the !important rule, you might see it in some CSS source code. However, do not use it unless you absolutely have to.
💎One way to use !important is if you have to override a style that cannot be overridden in any other way. This could be if you are working on a Content Management System (CMS) and cannot edit the CSS code. Then you can set some custom styles to override some of the CMS styles.
@html_css_tut
"w3schools .com"
💎The !important rule in CSS is used to add more importance to a property/value than normal.
💎In fact, if you use the !important rule, it will override ALL previous styling rules for that specific property on that element!
💎It is good to know about the !important rule, you might see it in some CSS source code. However, do not use it unless you absolutely have to.
💎One way to use !important is if you have to override a style that cannot be overridden in any other way. This could be if you are working on a Content Management System (CMS) and cannot edit the CSS code. Then you can set some custom styles to override some of the CMS styles.
@html_css_tut
"w3schools .com"
CSS Box Sizing
📌The CSS box-sizing property allows us to include the padding and border in an element's total width and height.
💎Without the CSS box-sizing Property
✅ By default, the width and height of an element is calculated like this:
💎width + padding + border = actual width of an element
💎 height + padding + border = actual height of an element
🔑The box-sizing property allows us to include the padding and border in an element's total width and height.
🔑If you set
box-sizing: border-box;
on an element, padding and border are included in the width and height:
@html_css_tut
"w3schools .com"
📌The CSS box-sizing property allows us to include the padding and border in an element's total width and height.
💎Without the CSS box-sizing Property
✅ By default, the width and height of an element is calculated like this:
💎width + padding + border = actual width of an element
💎 height + padding + border = actual height of an element
🔑The box-sizing property allows us to include the padding and border in an element's total width and height.
🔑If you set
box-sizing: border-box;
on an element, padding and border are included in the width and height:
@html_css_tut
"w3schools .com"
📌box-sizing: border-box
📎The code below ensures that all elements are sized in this more intuitive way. Many browsers already use box-sizing: border-box; for many form elements (but not all - which is why inputs and text areas look different at width: 100%;).
🔑Applying this to all elements is safe and wise:
________________
* {
box-sizing: border-box;
}
_________________
@html_css_tut
"w3schools .com"
📎The code below ensures that all elements are sized in this more intuitive way. Many browsers already use box-sizing: border-box; for many form elements (but not all - which is why inputs and text areas look different at width: 100%;).
🔑Applying this to all elements is safe and wise:
________________
* {
box-sizing: border-box;
}
_________________
@html_css_tut
"w3schools .com"