How to write css search box

How to implement the search box in css: first organize the page structure; then use placeholder to annotate the text box; then set the search button; finally reset the default margins and inner margins of the page, and set the search box Just the outer border style.

The operating environment of this article: Windows7 system, HTML5&&CSS3 version, Dell G3 computer.

How to write the css search box?

Use p css to achieve the search box effect as shown in the figure:

Analysis:

1. Use markman to analyze the width, height, color, etc. of the original image, as shown below:

2. Analyze elements:
The search box Main components: input text box, button button, and a triangle indicator symbol on the left side of the button;

Implementation:

• First organize the page structure:

 

   <input>      SEARCH        <span></span>             

• Text box, use placeholder to annotate the text box:

<input>

• Search button:

<button>SEARCH</button>

• Triangle indicator: From the example As shown in the picture, this triangle symbol is integrated with the button, so we initially decided to use it as an internal element of the button, using positioning to achieve

<button>SEARCH
  <span></span>
</button>

• style design:

• First reset the default margins and padding of the page:

    *{
        margin:auto;
        padding:0;
     }

• Set the style of the class form:

 .form{
        width: 454px;
        height: 42px;
        background:rgba(0,0,0,.2);
        padding:15px;
        border:none;
        border-radius:5px;
}

Set the outer border style of the search box, set the transparency, remove the outer border line, and set the border radian:

background:rgba(0,0,0,.2);
border:none;
border-radius:5px;

• Set the style of the input input box:

input{
    width: 342px;
    height: 42px;
    background-color: #eeeeee;
    border:none;
    border-top-left-radius:5px;
    border-bottom-left-radius:5px;
    font: bold 15px 'lucida sans', 'trebuchet MS', 'Tahoma';
    font-style:italic;
}

The border radian is also Can be abbreviated as:

    border-radius:5px 0 0 5px;

Set font style:

    style-style:italic

There are other attribute values:

Attribute value	Description
normal	Default value. The browser displays a standard font style.
italic	The browser will display an italic font style.
oblique	The browser will display an oblique font style.
inherit	Specifies that the font style should be inherited from the parent element.

• Button style:

button{
    width:112px;
    height: 42px;
    background-color:#d93c3c;
    color:#fff;
    border:none;
    border-radius:0 5px 5px 0;
    position: relative;
}

Note that relative positioning is used here:

 position: relative;

The function is to Help indicates the position of the triangle;

• Indicates the style of the triangle:

 .t{
    border-width:6px;
    border-style:solid;
    border-color: transparent #d93c3c transparent transparent;
    position: absolute;
    right:100%;
}

This element uses absolute positioning, and its y coordinate is referenced from right to left to 100 of the element. % At the border position, if the x coordinate is not set, the default is 0:

 position: absolute;
 right:100%;

Steps to make a triangle indicator symbol:

• Define the span element of the triangle:

<span></span>

• Create a four-color border:

 .triangle {
    display: inline-block;
    border-width: 100px;
    border-style: solid;
    border-color: #000 #f00 #0f0 #00f;
}

border-color The four values ​​represent the colors of the upper, right, lower, and left borders in turn.

[Recommended learning: css video tutorial]

• In whichever direction of triangle you need, just set the other three triangles to transparent

border-color: #000 transparent transparent transparent;

Instead of using span, use pseudo-classes to directly position the triangle. Then delete the span element and style of the triangle and directly add before to the style of the button element. The complete code is as follows:

nbsp;html>


    <meta>
    <title>Document</title>
    <style>
        *{
            margin:auto;
            padding:0;
        }
        .form{
            width: 454px;
            height: 42px;
            background:rgba(0,0,0,.2);
            padding:15px;
            border:none;
            border-radius:5px;
        }
        input{
            width: 342px;
            height: 42px;
            background-color: #eeeeee;
            border:none;
            border-top-left-radius:5px;
            border-bottom-left-radius:5px;
            font: bold 15px &#39;lucida sans&#39;, &#39;trebuchet MS&#39;, &#39;Tahoma&#39;;
            font-style:italic;
        }
        button{
            /*display:inline-block;*/
            width:112px;
            height: 42px;
            background-color:#d93c3c;
            color:#fff;
            border:none;
            border-top-right-radius:5px;
            border-bottom-right-radius:5px;
            position: relative;
            font-size:16px;
            font-weight: bold;
        }
        /*使用伪类来添加三角符号*/
        button:before{
            content:"";
            border-width:6px;
            border-style:solid;
            border-color: transparent #d93c3c transparent transparent;
            position: absolute;
            right:100%;
            top:38%;
        }

    </style>

    

                   <input><button>SEARCH</button>             

    

 

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