How to make a modal fullscreen?

Question

I am trying to make a bootstrap vue modal fullscreen. Which css classes should I override, I want to do this in a scoped style in the component that will use this modal.

Solution 1

You want to edit .modal-dialog and force the dimensions.

Example CSS:

.modal-dialog {
    max-width: 100%;
    margin: 0;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100vh;
    display: flex;
}

Additionally to get this working in vue. You can try adding a class to b-modal and trying something like this:

<div>
  <b-button v-b-modal.modal1>Launch demo modal</b-button>

  <!-- Modal Component -->
  <b-modal class="test-modal" id="modal1" title="BootstrapVue">
    <p class="my-4">Hello from modal!</p>
  </b-modal>
</div>

CSS:

.test-modal .modal-dialog {
    max-width: 100%;
    margin: 0;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100vh;
    display: flex;
    position: fixed;
    z-index: 100000;
}

Solution 2

Expanding on the accepted answer, to apply this locally by applying a class to the outer modal div, you need to use the the modal-class property on the component rather than giving it a class like you would normally.

https://bootstrap-vue.org/docs/components/modal#variants

JS:

<b-modal modal-class="modal-fullscreen">
    ...
</b-modal>

CSS:

.modal-fullscreen .modal-dialog {
    max-width: 100%;
    margin: 0;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100vh;
    display: flex;
    position: fixed;
    z-index: 100000;
}

Comments

[Zim]

What have you tried so far?

[ConfusedCoder]

I have tried overriding the classes by using emmanuels answer github.com/bootstrap-vue/bootstrap-vue/issues/1730, I have tried globally overriding the modal-body, modal-content, modal-dialog class and giving them 100% width and height (the height worked but the width wasn't working and I couldn't figure out why)

[ConfusedCoder]

This works globally but I only want to change this modal, how can I access .modal-dialog if i assign a class to b-modal?

[Gazeciarz]

Just to mention if anyone else will face same issue. Currently u need to assign class via "modal-class" attribute on b-modal not "class".