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29 Ιαν 2017 · You need to put the dropdown menu and the toggle button inside a .btn-group. Also, Bootstrap provides the .text-center property to align the contents. This can be used on .school-options-dropdown, instead of manually adding CSS.
Purpose: This class is used to vertically align the child elements (content) of the flex container to the center. Behind the scenes: Bootstrap applies the align-items: center; CSS property to the flex container, ensuring its children are vertically centered.
Bootstrap Form Layouts. Bootstrap provides three types of form layouts: Vertical form (this is default) Horizontal form; Inline form; Standard rules for all three form layouts: Wrap labels and form controls in <div class="form-group"> (needed for optimum spacing) Add class .form-control to all textual <input>, <textarea>, and <select> elements
The .dropdown class indicates a dropdown menu. To open the dropdown menu, use a button or a link with a class of .dropdown-toggle and the data-toggle="dropdown" attribute. The .caret class creates a caret arrow icon ( ), which indicates that the button is a dropdown.
Here are the key steps for creating a Bootstrap dropdown: Wrap the dropdown trigger element within an element with Bootstrap's .dropdown class, or another element that uses position: relative; Add Bootstrap's .dropdown-toggle class and add data-toggle="dropdown" to the
Custom <select> menus need only a custom class, .form-select to trigger the custom styles. Custom styles are limited to the <select>’s initial appearance and cannot modify the <option>s due to browser limitations.
You can use Bootstrap's .form-group-lg and .form-group-sm on form groups within a horizontal form (forms assigned the .form-horizontal class). You may need to open the preview in a new window to see the full effect (and/or view it on a large screen).
