Here's some example frames showing the expansion of cards on a grid with some dummy names used. Tried producing live version of example through stackblitz but it relies on multiple components/module for the card, row, and root; and does several calls to a live server for info that'd be too extensive to find and replace all those references with a service. My apologies.

When dropdown arrow is clicked cards are resized to take 2 cells and push the next members over.

Relevants html/ts parts

Root html

<!-- use hidden instead of ngif so that the images only have to load once while in table view instead of loading for cards -->
<!--card part-->
<div [hidden]="!showCards" *ngIf="!reset">
  <div class="row justify-content-center">
    <ng-container *ngFor="let employee of allEmployees; let i = index; first as first">
       <app-employee-card  [hidden]="!employeeDisplayed(employee)" class="card-container" [ngClass]="employee.expanded ? 'col-xl-6 col-md-6 col-sm-12' : 'col-xl-3 col-md-4 col-sm-6'" [class.transition] = "transitioning" [employee]="employee" [columns]="columns" [editAbility]="isAdmin || isSelf(employee)" (changedEmployee)="employeeChanged($event)" (successAlert)="showSuccess($event)" (errorAlert)="showError($event)" (doubleSize)="employee.expanded=!employee.expanded;transition()"></app-employee-card>
    </ng-container>
  </div>
</div>   

relevant root ts function

//allows smooth transition when card is expanded transition(){

this.transitioning=true;
let parent = this;
this.changeDetector.detectChanges();
setTimeout(()=>{
  this.transitioning=false;

}, 1000)

}

A card is just defined in html as

<div >



<mdb-card class="testimonial-card">
    <div class="card-up card-background"></div>
    <mdb-card-body>
        <mdb-card-title>
            <div class="circuit-background-container">
                <div class="content">
                    <div class="avatar mx-auto" >
                        <input *ngIf="editAbility" type="file" accept=".png, .jpg, .jpeg" style="display: none;" id="{{isModal ? employee.first_name+employee.last_name+'ProfileImageModal' : employee.first_name+employee.last_name+'ProfileImage'}}" (change)="uploadImage($event)">
                        <label for="{{isModal ? employee.first_name+employee.last_name+'ProfileImageModal' : employee.first_name+employee.last_name+'ProfileImage'}}" [class.changeImage]="editAbility">

                            <img (load)="imageLoaded=true" [src]="imageSrc" class="rounded-circle" />

                            <!-- <object (load)="imageLoaded = true;" type="image/png" width="110" height="" [data]="imageSrc"></object> -->



                        </label>
                        <mdb-spinner [hidden]='!loading' class="image-loader"></mdb-spinner>
                        <i *ngIf='imageLoaded' class="camera-backdrop fas fa-camera fa-3x"></i>

                    </div>

                    <h4>
                        {{employee?.first_name}} {{employee?.last_name}}
                        <span class="editBtn" *ngIf="editAbility&&expanded">
                            <i (click)="enableEditing()" class="fas" [ngClass]="editMode ? 'fa-cloud-upload-alt' : 'fa-user-edit'"></i>
                        </span>
                    </h4>
                    <div class="links">
                        <!-- <a href="{{'mailto:' + employee.email_address}}"><i class="far fa-envelope"></i></a>
                        <a href="{{'tel:' + employee.phone_number_cell}}"><i class="fas fa-phone"></i></a> -->
                        <a (click)="expandedCard.toggle();expandCard();"><i class="fas expandBtn" [ngClass]="expanded ? 'fa-chevron-up' : 'fa-chevron-down'"></i></a>
                    </div>
                </div>  
            </div>
        </mdb-card-title>

        <!-- <div mdbCollapse #expandedCard="bs-collapse">

            <hr >

            <div class="employee-data-container row" >

                <ng-container *ngFor="let col of columns; let i = index" >
                    <div class="col-sm-6 employee-data" *ngIf="col.cardDisplay && findValue(col.attributes)">
                        <div *ngIf="!editMode">
                            <span class="font-weight-bold">{{col.header + ":"}}</span>
                            {{findValue(col.attributes)}}
                        </div>
                        <div *ngIf="editMode" [class.edited]="col.changed">
                            <span class="font-weight-bold">{{col.header + ": "}}</span>
                            <div *ngIf="!col.dropdown; else dropdown" class="md-form editDb">
                                <input type="text" class="form-control form-control-md" mdbInput value="{{findValue(col.attributes)}}" (keyup)="valueChanged($event, col)" (keypress)="blur($event)">
                            </div>
                            <ng-template #dropdown>
                                <div class="md-form editDb">

                                    <select class="browser-default form-control form-control-md" (change)="valueChanged($event, col)">
                                        <option *ngFor="let option of col.dropdown" [value]="option.value" [selected]="option.name === findValue(col.attributes)" >{{option.name}}</option>
                                    </select>
                                </div>
                            </ng-template>
                        </div>
                    </div>
                </ng-container>


            </div>
        </div>
         -->

    </mdb-card-body>
</mdb-card>

and just a snippet of the ts dealing with expand check and edit

e//updates card when user presses input button
  enableEditing(){
if(this.editAbility){

  if(this.editMode){
    this.saveChanges();
  }
  this.editMode =! this.editMode;
  this.changeDetector.detectChanges();

    }
  }

  //ensures persistance across ids
  calcInputId(column){
return column.attributes[0].split('.')[0];
  }

  //focuses out of input box if user presses enter
  blur(event){
    if(event.which == 13){
  event.target.blur();
}
  }

  //pushes update to the clent side for persistance
  updatedImage(updatedEmployee: Employee) {
this.loading = false;

// this.imageSrc = 'https://drive.google.com/uc?id=' + updatedEmployee.profile_image;
// this.setImageSrc(updatedEmployee.profile_image);
this.changeDetector.detectChanges();

this.successAlert.emit("Successfuly Updated " + this.employee.first_name + " " +             this.employee.last_name + "'s Profile Picture");

this.employee.profile_image = updatedEmployee.profile_image;

this.changedEmployee.emit(this.employee);

  }

  expandCard(){
this.expanded=!this.expanded;
this.changeDetector.detectChanges();

//changes width of the card when its expanded
this.doubleSize.emit(this.expanded)
  }

and just a minor bit of css that affect the transition animation

.transition{
transition: 1s
}

Sorry for that hacked and chopped code blocks, there is a lot other ancillary functionallity that I leave out, am just looking to recreate the scheme of resizing cards to some extant or by other means with just a blank card that expands/contracts on a click event.

Also unrelated FYI: the image uploader in the text editor of reply seems to be case sensitive and does not want to recognize .PNG as .png format, don't know if this is intentional or a bug, on windows some pictures list the format with caps when in explorer and had to rename to the lower for it to register.