Sizing

React Bootstrap 5 Sizing component

Easily make an element as wide or as tall with our width and height utilities.

Relative to the parent

Width and height utilities are generated from the utility API in _utilities.scss. Includes support for 25%, 50%, 75%, 100%, and auto by default. Modify those values as you need to generate different utilities here.

Width 25%
Width 50%
Width 75%
Width 100%
Width auto
        
            
          import React from 'react';
          
          export default function App() {
            return (
              <>
                <div className="w-25 p-3" style={{ backgroundColor: "#eee" }}>Width 25%</div>
                <div className="w-50 p-3" style={{ backgroundColor: "#eee" }}>Width 50%</div>
                <div className="w-75 p-3" style={{ backgroundColor: "#eee" }}>Width 75%</div>
                <div className="w-100 p-3" style={{ backgroundColor: "#eee" }}>Width 100%</div>
                <div className="w-auto p-3" style={{ backgroundColor: "#eee" }}>Width auto</div>
              </>
            );
          }
Height 25%
Height 50%
Height 75%
Height 100%
Height auto 
        
            
          import React from 'react';
          
          export default function App() {
            return (
              <div style={{height: 100, backgroundColor: "rgba(255, 0, 0, 0.1)"}}>
                <div
                  className="h-25 d-inline-block"
                  style={{width: 120, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Height 25%
                </div>
                <div
                  className="h-50 d-inline-block"
                  style={{width: 120, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Height 50%
                </div>
                <div
                  className="h-75 d-inline-block"
                  style={{width: 120, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Height 75%
                </div>
                <div
                  className="h-100 d-inline-block"
                  style={{width: 120, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Height 100%
                </div>
                <div
                  className="h-auto d-inline-block"
                  style={{width: 120, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Height auto
                </div>
              </div>
            );
          }

You can also use max-width: 100%; and max-height: 100%; utilities as needed.

... 
        
            
          import React from 'react';
          
          export default function App() {
            return (
              <img src="https://mdbootstrap.com/img/new/slides/041.jpg" className="mw-100" alt="..." />
            );
          }
Max-height 100% 
        
            
          import React from 'react';
          
          export default function App() {
            return (
              <div style={{height: 100, backgroundColor: "rgba(255, 0, 0, 0.1)"}}>
                <div
                  className="mh-100"
                  style={{width: 100, height: 200, backgroundColor: "rgba(0, 0, 255, 0.1)"}}
                >
                  Max-height 100%
                </div>
              </div>    
            );
          }

Relative to the viewport

You can also use utilities to set the width and height relative to the viewport.

        
            
          import React from 'react';
          
          export default function App() {
            return (
              <>
                <div className="min-vw-100">Min-width 100vw</div>
                <div className="min-vh-100">Min-height 100vh</div>
                <div className="vw-100">Width 100vw</div>
                <div className="vh-100">Height 100vh</div>
              </>    
            );
          }