Pilihan Elemen Lanjut ing CSS- Teknik lan Conto

Pseudo-kelas

Pseudo-kelas ngijini sampeyan kanggo milih negara tartamtu utawa posisi saka unsur. Contone, :hover milih unsur nalika pointer mouse liwat, :focus pilih unsur nalika dipilih utawa fokus, :nth-child() pilih unsur anak tartamtu ing grup.

Tuladha:

/* Select all links when hovered over and change the text color */  
a:hover {  
  color: red;  
}  
  
/* Select the <input> element when it is focused and change the border */  
input:focus {  
  border: 2px solid blue;  
}  
  
/* Select the second element in a group of <li> elements and change the text color */  
li:nth-child(2) {  
  color: green;  
}  

Pseudo-elemen

Pseudo-elemen ngidini sampeyan nggawe unsur virtual kanggo ngatur unsur sing ana.

Contone, ::before lan ::after nggawe unsur sadurunge lan sawise unsur, ::first-line lan ::first-letter pilih baris pisanan lan aksara pisanan saka unsur.

Tuladha:

/* Add content before each <p> element and style it */  
p::before {  
  content: ">> ";  
  font-weight: bold;  
  color: gray;  
}  
  
/* Style the first letter of <h1> element */  
h1::first-letter {  
  font-size: 2em;  
  font-weight: bold;  
  color: red;  
}  

Kombinator

Kombinator ngidini sampeyan nggabungake pamilih kanggo milih unsur adhedhasar hubungane. Contone, element1 element2 milih element2 nang element1, element1 > element2 milih unsur anak langsung saka element1, element1 + element2 milih element2 langsung sawise element1.

Tuladha:

/* Select <span> elements inside an element with class "container" */  
.container span {  
  color: purple;  
}  
  
/* Select <li> elements that are direct children of <ul> */  
ul > li {  
  list-style-type: square;  
  color: blue;  
}  

Pamilih atribut

Pamilih atribut ngidini sampeyan milih unsur adhedhasar nilai atribute. Contone, [attribute] milih unsur kanthi atribut attribute, [attribute=value] milih unsur kanthi atribut attribute sing padha karo value, [attribute^=value] milih unsur kanthi atribut attribute sing diwiwiti karo value.

Tuladha:

/* Select all elements with the attribute data-type */  
[data-type] {  
  font-weight: bold;  
  color: orange;  
}  
  
/* Select all <a> elements with the href attribute starting with "https://" */  
a[href^="https://"] {  
  color: blue;  
  text-decoration: underline;  
}  

:not() pamilih

Pamilih ngidini sampeyan milih unsur sing ora cocog karo pamilih tartamtu. Contone, pilih unsur sing ora duwe kelas, pilih unsur sing ora duwe ID. :not() :not(.class) class :not(#id) id

Tuladha:

/* Select all <div> elements that do not have the class "hidden" */  
div:not(.hidden) {  
  display: block;  
  background-color: lightgray;  
}  
  
/* Select all <input> elements that do not have the ID "email-input" */  
input:not(#email-input) {  
  border: 1px solid gray;  
}  

Conto iki nduduhake pilihan unsur lanjutan ing CSS. Sampeyan bisa ngatur lan ngetrapake teknik kasebut kanggo gaya lan ngatur unsur ing kaca web kaya sing dikarepake.