pick a tag by attribute css code example

Example 1: target css by form name

tag[name="nameofthetag"] {
	//style your html tag
}

Example: 
<input type="submit" value="Go" name="goButton">
input[name="goButton"] {
  background: red;
}

Example 2: css data attribute selector

[data-value] {
  /* Attribute exists */
}

[data-value="foo"] {
  /* Attribute has this exact value */
}

[data-value*="foo"] {
  /* Attribute value contains this value somewhere in it */
}

[data-value~="foo"] {
  /* Attribute has this value in a space-separated list somewhere */
}

[data-value^="foo"] {
  /* Attribute value starts with this */
}

[data-value|="foo"] {
  /* Attribute value starts with this in a dash-separated list */
}

[data-value$="foo"] {
  /* Attribute value ends with this */
}